What is Synchronous Machine and Its Basic Working Principle

Synchronous Machine

Electrical motor in general is an electro-mechanical device that converts energy from electrical domain to mechanical domain. Based on the type of input we have classified it into single phase and 3 phase motors. Among 3 phase motors, induction motors and synchronous machine are more widely used. When a 3 phase electric conductors are placed in a certain geometrical positions (In certain angle from one another) then an electrical field is generated. Now the rotating magnetic field rotates at a certain speed, that speed is called synchronous speed. Now if an electromagnet is present in this rotating magnetic field, the electromagnet is magnetically locked with this rotating magnetic field and rotates with same speed of rotating field. Synchronous motors is called so because the speed of the rotor of this motor is same as the rotating magnetic field. It is basically a fixed speed motor because it has only one speed, which is synchronous speed and therefore no intermediate speed is there or in other words it’s in synchronism with the supply frequency.

Synchronous motors are available in self-excited sub-fractional horsepower sizes to high power industrial sizes.In the fractional horsepower range, most synchronous motors are used where precise constant speed is required. These machines are commonly used in analog electric clocks, timers and other devices where correct time is required. In higher power industrial sizes, the synchronous motor provides two important functions. First, it is a highly efficient means of converting AC energy to work. Second, it can operate at leading or unity power factor and thereby provide power-factor correction.

Synchronous speed:


The synchronous speed of a synchronous motor is given:

in rpm, by:


and in rad·s−1, by:



 is the frequency of the AC supply current in Hz,

 is the number of poles per phase.

 is the pair number of poles per phase. 



 is the number of pole pairs per phase (rarely, planes of commutation) instead, simply divide both formulas by 2.

where f = supply frequency & p = no. of poles

Synchronous Machine


Synchronous motor is a doubly excited machine i.e two electrical inputs are provided to it. It’s stator winding which consists of a 3 phase winding is provided with 3 phase supply and rotor is provided with DC supply. The 3 phase stator winding carrying 3 phase currents produces 3 phase rotating magnetic flux. The rotor carrying DC supply also produces a constant flux.


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Chargepoint Home Flex EV Charger Installation Services

Electricians Review of the Chargepoint Home Flex

In the past few months, Root Electric has had quite a few requests to install wall connectors for newly purchased electric vehicles.  As more and more manufacturers are beginning to release electric vehicles, the demand for home charging solutions that will work with a variety of different vehicles is on the rise.  One new product of note is the ChargePoint Home Flex wall connector.  There are many technological features, such as the ChargePoint app that are easily understood from the standpoint of the average consumer.  However, since I am a professional electrician, I would like to review this product based on my knowledge and experience as an electrician.

The ChargePoint Home Flex is designed specifically so that the user can select the amount of electrical current drawn to charge the vehicle.  The range of current draw options for the ChargePoint Home Flex range from 16 Amps, all the way up to 50 Amps.  You may be reading this review thinking, “Well why would I want to set up the wall connector to charge my car at 16 Amps, when I can just set it to 50 Amps?” Well, that’s the correct question to ask, because it has the largest effect on the potential installation costs and future upgradeability of the installation.  I am going to delve into some of the more technical aspects of home EV charging for the benefit of the serious EV enthusiast.  Likewise, if you are an engineer reading this article, you may find that some of the more technical aspects are, let’s say, “general” for the sake of the less technically inclined. So if your mind begins to wander, or if the numbers aren’t tight to the NEC tables, please bear with me.  

One of the largest hindrances to installation of a home charging option for electric vehicles is the size of the electrical service on most homes in the United States.  Most homes in American suburbia are in the range of 50 years old or greater.  Most of these older homes have electrical services that range in size from 60 Amps to 150 Amps, while newer homes in most areas have a minimum service size of 200 Amps or greater.  The reason for this gradual increase in the size of home electrical services is the rise in reliance on electricity for cooking, refrigeration, heating, and cooling. In the mid 20th Century, most homes used fuel oil or natural gas for heat and cooking, but since the 1970’s, electricity has come to play a larger role especially because of the increased popularity of central heating and air conditioning.  Industry research has shown that the HVAC system in your home accounts for at least 30% of its energy consumption.  That said, many older homes that originally did not have air conditioning have since been upgraded to feature central air conditioning.  The rub is that while the HVAC system was upgraded, more often than not, the electrical service was left at its original size, which was not designed for the additional load of the air conditioning.  This leaves many older homes with an already maxed-out or overloaded electrical service that technically cannot handle additional load.  To make matters worse, many new homes are built with an electrical service that is pushed to its max.  So while the service may be rated at 200 amps, there may be precious little room for electrical upgrades. 

Customer Testimonial

Exemplary electrical work and customer service. This is the second time I have used Root Electric and they will continue to be my “go to” electrical contractor. The on-line estimate quote process works very well – there were no surprises. Bill Sr. gave me a 10:00 – 12:00 service window; he called at 10:00 to say he would arrive in 30 – 45 minutes. Bill wore a protective mask at all times, was very respectful and aware of social distancing. The two jobs were completed quickly. All in all, a real pleasure to work with.

Bruce G.

So what does this have to do with the installation with an electric vehicle?  Well it comes down to the amount of electrical current that a wall connector such as the ChargePoint Home Flex can pull.  At it’s full 50 Amp setting, the wall connector pulls as much electricity as your average kitchen electric range.  However, unlike your range, which is generally only being partially used (for example, you may only use one of the burners at once, or the oven itself without the cooktop), the EV charger is pulling its maximum current for hours at a time.  Because of this, electricians have to calculate the load placed on the electrical system to allow for the extended time high-current draw of the electric vehicle wall connector.  As an example, for standard residential electrical load calculations, your 50 amp range may only be calculated in at somewhere around 50% of its full load.  For easy math, that means if you have a 50 amp range, only 25 amps will be calculated into the total load placed on your electrical service.  This is because you are not using your range all of the time, and when you are, you are likely only using a fraction of its potential electricity draw.  A power connector for an electric vehicle, on the other hand, has to be calculated at 125% of its total draw.  This means that if you have a power connector rated at 40 Amps, you have to enter 50 amps to calculate the draw on the service.  If you have a newer home with gas heat and a 200 amp service, this won’t be a problem, but if your house was built in the 1950’s and has the original 60 amp service, and a central air conditioner installed in the late 1970’s, along with a remodeled kitchen, the service may not be able to support the load of the power connector without having to be upgraded.  This means additional expense on top of what you just spent on the car and on having the circuit and power connector installed.  (Although, if you have an older house, upgrading the service is a very good idea both for the long term safety and value of the home.)  

So where does all of this electrical mumbo-jumbo come in to play when it comes to the ChargePoint Home Flex?  Well, let’s say you just signed the lease on a shiny new Audi e-Tron and had Amazon deliver a new power connector to your doorstep.  Then you call an electrician to give you an estimate for installing a new 50 amp circuit, plus mount the new wall connector.  When he tells you that your service is not heavy enough to support the 50 amp load, you still have options to set the wall connector to 32 amps, 24 amps, or even 16 amps, and still have the option to increase the load to the full 50 amps in the future if you upgrade the service.  (Assuming the conductors feeding the power connector are large enough to support a 50 amp wall connector). 

Another advantage to having the option to pick the wall connector’s current draw is that you can choose how you want the wall connector to connect to your electrical system.  If you want maximum current draw at 48 or 50 amps for the fastest charge time, you can opt to have the ChargePoint Home Flex hardwired.  However, if you are willing to sacrifice a little bit of charging speed (limiting you to 40 amps or below) for the sake of being able to install more advanced power connectors in the future, you can have your electrician install a NEMA 14-50R or 6-50R outlet, which will work with just about every EV mobile connector or wall connector.  If you plan to sell your house in the near future, installing a 14-50R outlet or 6-50R outlet is a smart choice, since it will let the next homeowner install a power connector of their choice to power their own electric vehicle, which adds value to your home at the time of sale.  

If your head isn’t spinning by now, hopefully you now have a better grasp of the technical reasons of why the ChargePoint Home Flex is an excellent choice for a home EV charging power connector.  If you have an older home with a small electrical service, or even a newer home with a heavily loaded service, the ChargePoint Home Flex will give you options to safely charge your electric vehicle.  Additionally, it grants you the flexibility to set it up for fastest charging time or maximum future flexibility and upgradability.  There are many power connectors on the market, and while I am not in any way endorsing or promoting the ChargePoint Home Flex, I am saying that it would be worth a look for your electric vehicle charging needs.  


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Your Electrician in Prince William County: Root Electric

Electrical Services in Prince William County

Root Electric’s commercial and residential electricians are proud to be considered some of the best in Prince William County. From electrical repairs and home improvements to office electrical repairs and commercial tenant improvement projects, Root Electric has been serving the residents and businesses of Prince William County for more than three decades. Over that time, we have become the electricians Prince William County residents and business owners have come to rely on, time and time again for the safest, highest quality electrical work in the county. Your safety and satisfaction are our top priorities!

With the average home age in the county standing at about 25 years old, with many homes much older than that, Root Electric has the expertise necessary to upgrade electrical systems in older homes to make them safer, more efficient, and better able to handle the increased electrical demands of modern life and all of its gadgets. With businesses throughout Prince William County updating older spaces for retail, office space and workshop space, our electricians are also highly skilled at updating and improving electrical safety for commercial spaces. 

So, whether you need a residential electrician or a commercial electrician, Root Electric is the one to call for the safest, up-to-code, high-quality electrical work anywhere in Prince William County. Whatever your electrical needs are, contact our Prince William County electricians at Root Electric today for any of the following projects: (703) 494-3989.

How We Became the Electricians Prince William County Trusts

Of course, we can say we’re the top electrician in Prince William County—it’s easy enough to say, but harder to prove. And, naturally, there are certain things you’ll want to look for in your choice of residential electrician or commercial electrician. For Root Electric, the proof is definitely in how we have served our customers over the last 30+ years. For us, it’s more about family than anything else. Root Electric is a family-owned and operated team of electricians who’ve grown up in Northern Virginia. We know the homes and businesses here, and we have a sense of history and a deep knowledge of what our customers need because we’re from here too. But how can you tell for sure that Root Electric is the Prince William County electricians for you? Here are 5 things you should always look into when you are searching for the best electrician in your area:

For starters, you can take a look through our customer testimonials for the real experiences that your neighbors have had with us. We wouldn’t have lasted three decades without a commitment to quality and safety that our customers deserve. You can also look through the awards we’ve earned from EBSCO, local reader’s choice awards and Angie’s List. Root Electric maintains an open dialogue with our electricians and customers to ensure customers are satisfied with our methods and quality of installation.We are also licensed, bonded and insured, which is an essential protection for all of our clients and our expert electricians. We also continue to invest in new equipment and technological upgrades so that we can provide the best quality and most advanced solutions for any electrical repairs, electrical upgrades, remodeling projects, office electrical repairs and tenant improvement projects.The bottom line is that our entire team at Root Electric is committed 100% to your safety and your total satisfaction with your electrical repairs or upgrades. We provide the most extensive and clear estimates (now offering virtual estimates as well) of any electrician in Prince William County because we believe you deserve to know exactly what needs to be done and how the prices break down before anything else happens. For Root Electric, clear communication with our customers is one of the hallmarks of our top notch customer service! We care about you because you’re our neighbors! And that’s how we approach every project.

Customer Testimonial

Great work that has paid off! Had them install a subpanel about two years ago so we could power our most essential circuits off the generator. With all the rain lately, a tree just took down the only power line into our neighborhood. But we are doing just peachy, even if it takes Dominion all night!

Adrian W.

Call the Best Electrician in Prince William County: (703) 494-3989

Our Prince William home electrical services and commercial electrical services also span the entire spectrum of any electrical upgrades, improvement projects, installations and electrical repairs your home or business may require. Take a look through the following list to see what types of electrical projects we can do. Then please feel free to contact us to ask questions, discuss your project and get an estimate: 

Prince William County Residential Electrical Services

Electrical upgrades for older homesElectrical panel and circuit breaker installationCircuit breaker and electric panel replacement Electrical sub panel installationLight fixtures and recessed lighting installation and upgradesCeiling fan installationExhaust fan installationOutlet installationHome office electrical upgradesPlug and switch repairs, upgrades and installations “Heavy ups” – complete home electrical upgradesNew home wiringReplace aluminum wiring in older homesElectrical wiring and installations for home remodels and renovations Outdoor lightingSecurity lightingDeck lightingGFCI Outlet InstallationOutdoor outletsEmergency generator installation and serviceWhole home surge protectionPool wiring and hot tub wiringLandscape lightingAdditional wiring for appliancesADA-Compliant home electrical updatesHome electrical safety inspectionsEnergy-saving electrical upgrades and evaluations 

Prince William County Commercial Electrical Services

Commercial tenant improvement projects and build outs Office electrical repairsOffice wiring upgradesCommercial electrical panel installation or replacement Industrial lighting installation and replacement Retail lighting installation and repairCommercial office lighting upgradesWall pack service and replacementEmergency lighting installation and repairExit sign lighting Ballast replacementMetal halide repair and replacementHigh-pressure sodium repair and replacementFluorescent bulb replacementOffice LED lighting upgrades and replacementsOffice light fixturesCommercial property electrical safety inspectionsCommercial energy saving evaluations Underground fault locatingTroubleshooting Electric meter conversionsCommercial emergency generator installation and serviceCherry pickersBucket trucksInfrared thermography inspections

Choose the Best Electrician in Prince William County for Your Project

As local Prince William County electricians, Root Electric is dedicated to ensuring that homeowners and businesses in the area receive the best electrical repairs and service available, with the safest team in the area. Contact your electrician in Prince William County today for residential electrical services or commercial electrical services. You can expect courteous and prompt service, the best electrical upgrades, installations and repairs and the safest electrical work in Prince William County. 


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Deck Lighting and Outlet Installation Services

Deck Lighting and Electrical Outlet Installation Services

Installing deck lighting and outdoor outlets in your yard can extend your outdoor living opportunities well into the evening while also improving your home’s resale value. As the nights get warmer and with more families looking for ways to make close-to-home spaces seem more exotic, this is an excellent option that adds a lot of curb appeal too. There are many beautiful options for deck lighting that can improve safety and security as well. And extra outdoor outlet installation can give you more options for adding string lights, outdoor appliances and even a place to plug in your laptop for some outdoor home office scenery.

4 Deck Lighting Installation Ideas 

Depending on your deck design, outdoor living habits and goals, and how you’d like to improve those things, there are a number of different deck lighting options you can consider. And within these 4 deck lighting ideas, there are also many variations that you can consider: 

1. Step Lighting or Deck Stair Lights

One way to better illuminate your deck stairs is to install lighting right on them – on the vertical surface of each step, or under the lip of each step so that the light from the upper step shines clearly down on the lower step. This keeps the light focused downward to enhance safety going up and down the steps in the dark, and can also enhance your security lighting options as well. It also prevents light escaping upwards at night if you’re hoping for a good view of the stars.

2. Deck Post Lighting

There are many different styles and materials of deck post lighting. You can choose styles, colors and materials (from copper, aluminum or stainless steel and even plastic) that will look great and provide a decorative touch even during the daytime. Deck post lights should face down, again to illuminate the footpath or stairway at night. Deck post lighting is a very affordable option and can usually be installed quite easily. But if you’re a stickler for viewing the night sky, remember that these can produce more light pollution because they’re situated higher up than step lighting. 

3. Recessed Lighting on the Deck

Recessed lighting can be a great solution if you have a large overhang that needs illuminating on your deck. It provides great illumination to everything below and can be focused on certain areas that you particularly want to highlight or provide extra visibility for on your deck or backyard. Under-deck recessed lighting can only be installed if there is a covered porch above. 

4. Deck Rail Lighting

Deck rail lighting is also a great option that can be built flush into your deck rails in such a way as to make them invisible when you’re sitting. Again, they focus the light downwards toward the walkway or the stairs and also show people where the rail is.

Customer Testimonial

Very professional from the first contact by Bill Root through the free estimate and completion of the job. They kept the work area (my kitchen) very clean and made very few holes in the ceiling. My workmen included an apprentice. I think it is great that a company is assisting a young person to become a Master Electrician. I highly recommend Root Electric.

Chris R.

4 Reasons to Install Outdoor Outlets

In addition to installing extra deck lighting, if you really want to get more use out of your deck area, installing outdoor outlets that are protected from the elements is another smart move: 

1. More Deck Lighting Options

In addition to the deck lighting ideas listed previously, having a few extra outdoor outlets installed gives you more options for adding string lights or other electric-powered holiday decorations for the holidays. Just make sure you also have enough extra circuits to provide the power necessary to keep those lights brightly shining. 

2. Outdoor Cooking Appliances

As outdoor living and cooking become more popular, home chefs will need safe outlets and spaces that are protected from the weather to cook and use kitchen appliances outdoors. Whether that means you want to have an outdoor fridge or powered cooler, an electric grill or any other appliance, you’ll need to install outdoor outlets. 

3. Extending Your Home Office to the Outdoors

After several weeks of working from home in the kitchen or the living room, or maybe a dedicated indoor home office, you may be feeling the pull of the outdoors. If you’re tempted to tote your laptop outside to the deck, make sure you have a place to plug it in safely while you’re out there so you don’t lose power right in the middle of your next Zoom meeting. 

4. Safety Upgrades for Outdoor Outlets 

All outdoor outlets should be GFCI outlets that automatically shut power if they become wet. But newer models exist that provide extra protection from the weather and elements. Safety is always the most important consideration, so if you are not sure about your current outlets or want to install new outdoor outlets, contact us today for a virtual estimate and we can provide guidance. 

Install Deck Lighting and Outdoor Outlets

Remember that installing new deck lighting or outdoor outlets is a job best left to a licensed electrician for safety reasons, but also quality and insurance reasons. Get the job done right, and beautifully, the first time by contacting us today at Root Electric: (703) 494-3989.


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Electrical Upgrade During Your Remodel

​​If I Remodel My Home, Do I Need an Electrical Upgrade too?

Tis the season for remodeling here in Northern Virginia. People are updating their kitchens, their bathrooms, their home offices, etc. with remodeling plans they’ve been dreaming about for a few years now. But with these remodels, these questions always come up:

Do I need an electrical upgrade during my remodel?Should I get an electrical upgrade at the same time, before, or after the remodel?

Good questions, the answers to which largely depend on the home and the remodeling projects being done. But the majority of the time, the answers are:

Yes, you probably need an electrical upgrade, and…It’s usually more cost effective and safer to do the electrical upgrade at the same time as the remodeling project.

Of course, your home or circumstance may be different, but more often than not, you’ll want to take an electrical upgrade into account if you’re doing any major remodeling project in your home, particularly when it comes to kitchens, bathrooms, home offices, entertainment rooms or additions.

Why Do I Need an Electrical Upgrade with My Remodeling Project?

If you live in an older home, like many families here in Northern Virginia, it’s possible your home has actually needed an electrical upgrade for awhile now, depending on when you last had it done. Not only have our electrical demands increased over the years, but the building codes dictating how electrical work is done in homes have also changed to address those increases over the years. If your home isn’t currently up to code, adding new appliances, additional space, outlets, switches, etc. may well require an electrical upgrade in order to keep your home safe, efficient and up to local building codes.

Customer Testimonial

Excellent service all around. Bill Root III came out and provided an estimate, and answered all the questions I had. He was very patient and professional with me. The estimate was very detailed and an excellent price. Root Electric did an excellent job coordinating the schedule with me, their technicians, the county inspector, and the electric company so that everything would be completed the same day.

When the work was performed, the 2 technicians arrived and got right to work. They were very thorough, professional and got all the work completed with no issues (no issues from the inspection either). I would definitely recommend this company and will use them again.

Kent S.

Bathrooms, Kitchens, Workshops, Home Offices and Entertainment Rooms Need More Power

Kitchens and bathrooms are two of the most popular types of remodeling projects, but many families are adding rooms, updating their home offices, adding workshops, etc. All of these new additions or remodels require upgraded, more efficient electrical wiring, and possibly a new electrical panel.

Let’s just discuss the kitchen for a moment, as an example. In older homes, kitchens often didn’t have that many outlets because there weren’t as many small appliances and gadgets in use. Fridges and ovens were smaller and didn’t pull as much juice as today’s larger models either. Today’s building codes require an outlet ever 6 feet away—but we find that for many of our customers, they need outlets spaced around 4 feet from each other.

Remodeling at the Same time as an Electrical Upgrade

It makes far more sense to upgrade your electrical system during a home remodeling project than to delay it until afterwards. Here’s why:

It saves time and dust to update the wiring while everything is out in the open during the remodel.

It costs far more to have to re-open walls and panels you’ve just finished in order to do the electrical work later.

Overall, it will save you a lot of time, money and hassle to just do it all at the same time. That way, the electrical system can be updated to accommodate your new remodel as well as your current and future electrical needs as they grow. It’s also safer to do all of the electrical work this way so that your electrical system fits well with any new appliances, tools, office systems, etc. that you intend to install during your remodel.

Need a Woodbridge, VA Residential Electrician? Call (703) 494-3989

If you’re getting ready for a remodeling project, large or small, don’t forget to contact Root Electric, the residential electricians homeowners trust to keep their homes safe and powered up in the most efficient way possible: (703) 494-3989. We’ll show you how you can save time and money on your remodeling project while keeping your home current on all your family’s electrical needs.


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Electricians in Woodbridge

Licensed experienced Electricians in Woodbridge, VA (see testimonials about their work)

The Electricians Woodbridge Trusts: 6 Things You Can Expect from Root Electric

For more than three decades, Root Electric has earned a reputation as the electricians Woodbridge neighbors go to when they want to remodel, replace a light fixture, update wiring at their business, renovate a commercial building, install a generator, need to fix an electrical problem at home, or anything else having to do with electricity. We make it top priority to put our customers first always, in terms of safety and high quality electrical work. So, if you need a bonded, insured and licensed electrician in Woodbridge, just contact us today for any of your electrical repair, installation, inspection or emergency needs: (703) 494-3989. Here’s what you can expect when you call:

1. Local Electricians in Woodbridge

We’ve been working tirelessly in the Woodbridge area for more than 30 years and understand how the houses are built here and how the local electrical and building codes work. We live here and we understand the needs of our neighbors in the local community. So, whether you need to upgrade your home electrical system, install new light fixtures, remodel your kitchen, or repair home wiring, we know how to do it right the first time and make sure you, your home and family are safe when doing it.

2. A Wide Range of Residential Electrical Services

When you’re looking for an electrician in Woodbridge, you’ll need to pick one who is up for anything your particular home electrical system demands. That means a deep knowledge of a broad range of home electrical issues. This is something Root Electric’s home electrical experts specialize in. Below is a basic list of the services we provide:

Upgrade home electrical serviceRepair or replace electrical panelInstall whole-house surge protectionWhole-house rewiringReplace or Repair fuse boxInstall sub-panelInstall, upgrade or repair appliance circuitsInstall exhaust fansInstall attic fansInstall ceiling fansInstall or repair outletsInstall new light switchesInterior and exterior lighting designInstall new light fixturesInstall recessed lightingInstall outdoor lightingInstall security lightingInstall under-kitchen cabinet lightingUpdate electrical service for vintage homeRepair aluminum wiringReplace light fixturesHome electrical troubleshootingInstall emergency generatorsInstall portable generators and panelsIdentify circuitsHOA contractsProvide electrical home inspectionsInstall electrical for accessory dwelling units (detached or attached)Hot tub and spa electricalDeck outlets and lightingBasement electrical repairsInstall light postsRepair cable television outletsTelephone outletsInstall dedicated outlets for electric carsProvide electrical installation and repair for home additionsInstall wiring for remodelingInstalling ADA-compliant lights, switches and outlets

3. A Fully-Qualified Commercial Electrician in Woodbridge

In addition to providing a full suite of residential electrical services in Woodbridge, we also provide commercial electrical services. With our extensive certification, licensing and understanding of local building codes, we can take care of your local business just as well as we can take care of your home. Whether you need office lighting installation, wiring repair or anything else, Root Electric is the commercial electrician Woodbridge businesses call when they need help avoiding downtime.

4. Licensed, Bonded and Insured Woodbridge Electrician

One of the most important questions you should ask any Woodbridge electrician you’re thinking of hiring, whether for a residential or commercial electrical repair or installation, is to see proof of their license, bonding and insurance. These are essential certifications and documents that demonstrate that your electrician continues to stay current with changes and updates to local and national building codes, maintains the highest quality standards and makes sure to protect their workers, equipment and their clients with insurance. Never hire anyone without these qualifications.  

5. Respect for You and Your Home

One thing that drives us crazy is when we hear about a bad experience a homeowner has had with another electrician in Northern Virginia who did not take care to put down drop cloths or clean up after themselves when they finished a home electrical repair job. Our residential electricians take the utmost care to leave your home better than they found it, both in terms of excellent, high quality electrical work and cleanliness!

6. Hyper-Detailed Estimates

Many Woodbridge electricians out there will give you a very general, broad estimate because they are afraid of potential contingencies and unexpected findings when they get to working on your home electrical repair. But not Root Electric. This sets us apart from other Woodbridge electricians because we deeply research and examine your problem and take into account as many possible “unexpected issues” as possible so that we can draw up an estimate that contains nearly every possible detail you could expect. That way, you aren’t confronted by any unpleasant surprises when we settle the bill. It’s all spelled out clearly, with all your questions answered up front. We’ve gotten several awards for this sort of thing, in addition to our high quality work and customer service. And if anything does come up that we did not expect (rare), we inform you immediately. Good communication with our clients is one of the many reasons we’ve become the electricians Woodbridge homeowners rely on when they need help.

Root Electric: Your Best Electrician in Woodbridge

Electrical work, whether in your home, or in your business, is never something you should leave to chance. Choose the Electrician Woodbridge residents have depended on for more than three decades to provide the highest quality, safest electrical work in Northern Virginia. Contact us today for a free quote: (703) 494-3989.

We look forward to working with you!

Customer Testimonial

I had several items to be done and all were done on a schedule easy for me to meet and all the work was done well. The technicians were very knowledgeable, courteous, and prompt. It was a very easy experience and I am very satisfied.

Ann W.


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Extension Cords Safety

This article has been published at Old Bridge Observer over 10 years ago on July 21st, 2007. It shows our commitment to help our customers as much as possible to give he best advice for Electricity and Safety at your home. 

Bill’s Safety Circuit
Bill Root, Licensed Master Electrician, Answers Your Questions About Electricity And Safety

I have the good fortune of working
 with many real estate professionals 
serving the public in the Old Bridge 
area. My skills are tested as the result
 of home inspections made by
 specialty companies highly trained in 
this field. One location in a home that
 especially comes to my attention is
 the attic. On too many occasions, I 
have seen hazardously performed
 electrical installations in this out of
 the way spot. 

The use of extension cords to wire
 anything in a home is an accident
 waiting to happen. The extension cord
 of choice seems to be the 3-wire
 outdoor type which can be found in
 various colors. This material is not an 
approved National Electrical Code
 wiring method and therefore is not
 safe. One home owner installed a 
receptacle in the attic using an
extension cord, then proceeded to 
wire ceiling fans with the same
 material. When finished, all there 
was to do was simply plug the 
extension cord into the receptacle to 
supply power to the newly improperly 
wired ceiling fans. Just because it
 works doesn’t mean it is safe.

Please, when tackling a home project,
 consult a professional or a “how to” 
book to keep your home in one piece
 and your family safe. 

Remember, knowledge is power -
 don’t be left in the dark.

Email your questions to:
 [email protected]

Putting your safety first since 1986.


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How to Extend Your Electric Vehicle’s Range

6 Secrets to Make Your Electric Vehicle Go Farther

More and more people are opting to get electric cars, which is awesome for the environment, but it can be a real adjustment period, getting used to how they work. One frequently asked question we often hear is: “How can I make my electric vehicle go farther?” So we’ve collected this set of tips to help. If you have any other questions about this or EV charger installation, contact Root Electric today for assistance. 

1. Opt for the biggest battery you can afford

Premium electric vehicle batteries are not cheap, we know. But the bigger the capacity, the less often you’ll need to interrupt your day for a recharge, especially on long trips or while commuting. Because time = money in real life, choosing the bigger battery will save you both in the long run. 

2. Be Careful Using the Heat

In classic gas engines, the combustion process makes heat naturally, which you can use to heat your car. This doesn’t happen in electric vehicles, so there’s very little heat that gets generated without drawing extra juice from the battery to fire up the resistance heater or heat pump. Even Tesla recommends trying to limit the car’s HVAC system. Dress warmly and rely on the seat heaters on really cold days. 

3. Don’t Punch It for Acceleration 

The same is true for cars that run on gasoline. The more you “punch it”, the more you tax the battery, which can wear it out more quickly. So just drive and accelerate at a sane pace unless you have a situation that calls for quick acceleration to stay safe. 

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4. Watch Tire Inflation

Again, this makes sense for any vehicle, electric or combustion. But in the case of EVs, you don’t have to get your oil changed regularly, which is when you’d normally get your tires checked. You have to remember to do that regularly on your own in order to keep your battery running efficiently. Make a point of checking the tires at least monthly and it will de-stress your battery so it runs longer. 

5. Keep the Trunk Clear

Any extra weight you keep in the trunk is going to make the battery work harder. On average, people may load 100-300 extra pounds in their vehicles on any given day and just leave it there. We all do it. But if you don’t need those things in your trunk on a day-to-day basis, store those things in the garage and your battery will go farther. 

6. Keep Your Car Warm in Winter

Make sure to check your EVs owner’s manual about cold weather protocol. Simply put, batteries don’t like the cold. Low temperatures can lower the range of an electric car. Keep it plugged in overnight if you have to park outside, but if you can, keep the car in the garage overnight where it won’t get as cold. 

Each electric vehicle works a little differently, so be sure to follow your owner’s guide for more ways to extend your car’s battery range. If you have questions about, or need EVSE installation in Northern Virginia, contact Root Electric today.


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Tips to Identify Electrical Wires

electricianAn electrician is a person specializing in electrical wiring of commercial buildings, electrical transmission lines, industrial machinery, and other related electrical items. Electricians can be employed either in the construction of new electrical units for homes, business establishments or the repair and maintenance of old electrical infrastructure. They perform works such as wiring up power cables, installing and repairing transformers, testing circuits, etc. Thus, the electrician plays a crucial role in different sectors of industry.


There are different types of electricians and they perform different functions. A good electrician needs to be well-versed with all the electrical systems and instruments. For instance, he must be proficient with the use of transformers, circuit breakers, circuits, power outlets, etc. He should also be skilled at laying out the plans for new constructions or modifications. Thus, he should be a very resourceful and adept electrician.


To become an electrician, one must get through several stages. This includes taking up apprentice training programs offered by vocational schools and community colleges. In most cases, electricians start their training programs by completing their formal education. However, there are several electricians who opt for short-term courses while going through their formal training.


After completing formal education, electricians get an opportunity to take up hands-on training programs. These programs usually last for two years at a vocational-technical school or a technical college. On completion of a training program, electricians obtain a certificate known as EITC (English Institute of Electrical Testing and Technology). On completion of a course at a vocational-technical school, electricians receive an associate’s degree. Electricians who want to take up higher education can get through an online program at a vocational-technical school. With the increasing demand for electricians, there are many online institutions that offer electrical systems training.


There are also a number of vocational-technical schools that offer courses in-classroom training. The instruction takes place in an actual classroom. The classroom training helps electricians develop the skills they need to become an electrician. Although classroom training is highly beneficial, it may not be suitable for all electrician applicants. If you want to pursue classroom training but don’t have an opportunity to travel and meet other students, classroom training might not suit you. This is because some subjects taught in classroom training require theoretical study rather than practical application.


On the other hand, there are electricians who choose to receive their training on the job. The work of these electricians is mostly to set up wiring and perform routine maintenance work in residential electricians’ offices. These electricians are usually employed by large-scale construction companies that own big buildings. They work alongside employees who have much more experience since the work requires close collaboration between the employees. In small offices, they work in pairs.


If you’re thinking of becoming an electrician, there are a number of things you need to know about being an electrician. Electricians have different job titles such as power installers, wiring contractors, or ac engineers. Although electricians generally work with electrical systems, there are slightly different types of electricians that do not have to work with electrical systems. A contractor is an electrician that installs and repairs systems like home cooling and heating systems and electrical systems. Contractors that provide plumbing, heating, or ventilation services are not considered to be electricians.


To be able to become one, you need to have a high school diploma. You don’t even need to have a high school diploma to become an electrician in most states. However, becoming an electrician usually requires the completion of a two-year course. Courses are available at community colleges, vocational schools, technical schools, and vocational programs. You can also complete your course at a college or trade school. You can find out more about becoming an electrician by checking with your state’s licensing boards.