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Avatar for Electrical & Security Solutions, LLC
Electrical & Security Solutions, LLC
5.0(
13
)
Fixed Generator - InstallFixed Generator - Repair

Serving Salisbury, NH and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Tyler and his crew were amazing! Professional, on time, great communication, and the work is top notch! From first visit to get an estimate to cleaning up the job site, perfect! Thank you and highly recommend to anyone that is looking for electrical work!"
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting

+10

Response time7 hrs
Response rate100%
9 neighbors recently requested a quote
Avatar for Joseph sweeny
Joseph sweeny
4.1(
9
)
Portable Generator - InstallPortable Generator - Repair

Serving Salisbury, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"Mr. Sweeney installed an outlet in the house and also an electrical vehicle charger. He was very informative about the work he was doing and was very friendly. I’d recommend him for any work you may need. Hard worker and very driven."
Deck staining
Deck staining
24 neighbors recently requested a quote
Recommended by14%of homeowners
Avatar for Willett Electric, LLC
Willett Electric, LLC
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Salisbury, NH and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

Willett Electric LLC is committed to excellence in every aspect of our business. We uphold a\nstandard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is\nthe quality of service we bring to our customers. We have accurate knowledge of our trade\ncombined with ability is what makes us true professionals. Above all, we are watchful of our\ncustomers' interests, and make their concerns the basis of our business.

Kitchen remodel
Bathroom Reno’s
Bathroom Reno’s
Bathroom Reno’s
Bathroom Reno’s

+14

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

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.

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

The Salisbury, NH homeowners’ guide to generator installs

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