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Top-Rated Generator install pros in Jamestown - Updated Nov 2026

ASAP Electric
New to Angi
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Jamestown, ND and surrounding areas

In business since 2022

Free estimates

Offers commercial services

ASAP Electric is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests and make their concerns the basis of our business.

JMS Electric
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Jamestown, ND and surrounding areas

In business since 2012

Free estimates

Offers commercial services

JMS Electric is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Avatar for Joey Walz
Joey Walz
New to Angi
Portable Generator - Repair

Serving Jamestown, ND and surrounding areas

Emergency services offered

Warranties offered

Small jobs welcome

Im 38 and have been in the construction industry since I was 10. I've worked for Redlin Johnson for 5 years as well as Western Products for 5 year, also All New Gutter for 2 years. I wont tackle a job I cannot do and Im very honest and transparent about everything and warranty my work.

Uncles trailer remodel
Uncles trailer remodel
Uncles trailer remodel
Uncles trailer remodel
Uncles trailer remodel

+27

Generator Install FAQs, answered by experts

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Many services include assembling the unit and securing it in the window. Confirm with your provider.

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

The Jamestown, ND homeowners’ guide to generator installs

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