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Avatar for Powertex Electric
Powertex Electric
5.0(
10
)
Fixed Generator - InstallPortable Generator - Install

Serving Mansfield, TX and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Casey from Powertex did a great job. He installed recess lighting, a ceiling fan and dimmers. He also fixed a electrical switch. He took great care to protect my space while he worked. I will use Powertex for all my electrical needs."
Panel Before
Panel During Re-wire
Panel Rewire & Cleanup
Tesla Wall Charger
Free Estimates

+8

6 neighbors recently requested a quote
Avatar for McBride Electric
McBride Electric
5.0(
18
)
Fixed Generator - InstallPortable Generator - Install

Serving Mansfield, TX and surrounding areas

Approved

In business since 1961

Emergency services offered

Warranties offered

"I engaged McBride to install two ceiling fans at my house. The installer, Justin, did an excellent job on both and I'm very pleased with Justin and the work he did for me. For my next electrical project I will be calling McBride."
Response time11 hrs
Response rate90%
11 neighbors recently requested a quote
Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Mansfield, TX and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

Tri-State Water, Power & Air has been provided products designed to improve the comfort and quality of life of our customers since 1992. Our specialty is Automatic Home Standby Generators. \nWe expect customer service excellence and aim to go above and beyond on every call. With 10 locations across 8 states, Tri-State is always ready to serve you.

Additional Photos
103 neighbors recently requested a quote
Avatar for Wilder Electric, LLC
Wilder Electric, LLC
4.7(
78
)
Portable Generator - Install

Serving Mansfield, TX and surrounding areas

Approved

In business since 2018

Emergency services offered

Warranties offered

"The security lights were replaced and covers installed for the outside electrical outlets . Also a pull chain light was replaced with a motion detected LED light in a closet. Garage lights were replaced with LED lights. Christopher and his associate have spent a lot of time coming back to adjust an outside security light. They are such professional electricians and will stand behind their work. . I recommend their services."
Soda Shop
patio plug
She plug
The Brian house
Front

+34

Response time6 hrs
Recommended by98%of homeowners
Avatar for Nmj Electric, LLC
Nmj Electric, LLC
5.0(
5
)
Portable Generator - InstallFixed Generator - InstallGenerator - Install - For Business+1 more

Serving Mansfield, TX and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

At NMJ Electric, we provide dependable, high-quality electrical services for homeowners, businesses, and property managers throughout the Dallas–Fort Worth area. Whether you need a simple repair, a complete electrical installation, troubleshooting, lighting upgrades, panel replacements, or preventative maintenance, our goal is to deliver safe, code-compliant solutions with exceptional workmanship.\n\nAs a veteran-owned company led by a Texas Master Electrician, we take pride in honest communication, attention to detail, and doing the job right the first time. We believe every customer deserves reliable service, transparent pricing, and an electrician they can trust to protect their home or business.\n\nNo matter the size of the project, NMJ Electric is committed to providing professional electrical solutions that keep your property powered safely and efficiently.

Tumble Town Gymnasium
Tumble Town Gymnasium
Tumble Town Gymnasium
Tumble Town Gymnasium
Tumble Town Gymnasium

+7

23 neighbors recently requested a quote
Avatar for Mister Sparky of Mansfield
Mister Sparky of Mansfield
5.0(
9
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Mansfield, TX and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Welcome to Mister Sparky of Mansfield! Family-owned and operated, we take pride in the quality of our work and the customer satisfaction we provide to each and every customer.\n\nWe are committed to delivering reliable, professional electrical services with exceptional attention to detail and dependable customer care throughout Mansfield, Midlothian, Cedar Hill, and surrounding communities.\n\nCall us today to learn more about how we can help you!

Mister Sparky Fleet/Team
Mister Sparky Fleet/Team
Mister Sparky Fleet/Team
Mister Sparky Fleet/Team
Mister Sparky Fleet/Team

+22

51 neighbors recently requested a quote
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Generator Install questions, answered by experts

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

While standby generators provide essential backup power, they can fail when you need them most due to lack of maintenance, fuel supply issues, dead batteries, electrical problems, or improper installation. To avoid costly failures, professional installation and regular maintenance are crucial. Licensed technicians ensure safety, uphold warranty requirements, comply with regulations, and provide expert servicing.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

The Mansfield, TX homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.