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Avatar for JP McCurdy Electrical Services Inc
JP McCurdy Electrical Services Inc
4.4(
529
)
Fixed Generator - Install

Serving Wenham, MA and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"We highly recommend J.P. McCurdy Electrical Services. We hired this exceptional shop to replace all the old knob and tube wiring (along with switching out a number of light fixtures and installing several ceiling fans) in our 120-year-old Victorian home – a challenging job that a couple of other electricians didn’t feel confident undertaking. Owner Jack McCurdy personally came to size up the job and give us a detailed estimate, and his professionalism, courtesy and extensive knowledge sold us. What was originally thought to be a two-week job was finished in six working days as foreman Joe Costain efficiently deployed his crew and brought in a second crew on a few days to expedite the work. Joe was great at communicating what kind of activity we could expect day-to-day, especially as both my wife and I are working from home fulltime during the COVID pandemic. He and the crew checked in frequently on our preferences, minimized the number of holes in the ceilings and walls (including avoiding harming our wallpaper in a couple of rooms altogether), and cleaned up well at the end of every day. Jack’s estimate was competitive and the final accounting accurately included the additions and subtractions we agreed to during the job. We feel so much better that we’ve finally eliminated the risky knob and tube wiring and updated the entire house’s electrical system. McCurdy is a full-service shop that does all kinds of electrical work – if you want a trustworthy and capable electrician, give Jack a call!"
Additional Photos
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+9

Response time12 hrs
3 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Upwire Electric, LLC
Upwire Electric, LLC
5.0(
63
)
Portable Generator - Install

Serving Wenham, MA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Upwire Electric is an exceptional company. They have installed a whole house generator for me as well as new electrical outlets and switches. Also replaceing old wornout electrical switches. Their workers are outstanding ( always professional, friendly and cheerful). I highly recommend Upwire Electric Company and their team."
Pendant, recess, under-cabinet lights
Island receptacles, cooktop, range, fridge
Track lighting over island
Response time4 hrs
4 neighbors recently requested a quote
Recommended by68%of homeowners
Avatar for Santo Electric, LLC
Santo Electric, LLC
5.0(
14
)
Fixed Generator - InstallPortable Generator - Install

Serving Wenham, MA and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"My Unit had been jerry rigged really bad by a home owner. Santo Electric solved the issues and revamped all the outlets in my unit. I'm also saving $ on my electrical bill. I would hire them again. Five stars!"
Response time8 hrs
Recommended by100%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.1(
1,316
)
Fixed Generator - InstallFixed Generator - Repair

Serving Wenham, MA and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"I had both electricians and plumbers who performed the work of the generator installation, transfer install as well as the plumbing to the propane tank-generator. Considering the time of year with hurricanes and inclement weather, the generators and transfer switches were backordered however, my job was completed within a 2 month period from the initial quote to finish- considering all of the obstacles that we faced, they did a fantastic job."
Career fair
Team breakfast
Festivals and events
Golf tournament
Heritage Helps initiatives

+27

Recommended by91%of homeowners
Avatar for J M Electrical Company, Inc.
J M Electrical Company, Inc.
5.0(
4
)
Generator - Install - For BusinessGenerator - Repair - For Business

Serving Wenham, MA and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"First and foremost, Joel was a pleasure to work with! Joel was extremely knowledgeable and helpful with the installation of our new Google nest. We were impressed with how prompt & easy going he was! Definitely going to be using him & recommending to family & friends."
Response time9 hrs
Response rate97%
11 neighbors recently requested a quote
Avatar for Northeast Power, LLC
Northeast Power, LLC
5.0(
3
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Repair+3 more

Serving Wenham, MA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"My solar inverter stopped working in my existing solar system, and since my original installer went out of business, I had a hard time finding someone to replace the inverter provided by SolarEdge. It was a small job, and most large companies weren’t interested, while those willing to help were booked out for at least a couple of months. I contacted Justin, and he replaced the inverter within just a few days. He was very friendly, efficient, and offered a very reasonable price. Justin was also extremely knowledgeable, explained everything clearly, and kept me updated throughout the process. He arrived on time, completed the work neatly, and made sure the system was running perfectly before leaving. Overall, his professionalism, honesty, and dedication to customer satisfaction made the whole experience stress-free and smooth."
Northeast Power
Northeast Power
Northeast Power
Northeast Power
Northeast Power

+2

57 neighbors recently requested a quote
Recommended by66%of homeowners
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Generator Install questions, answered by experts

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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

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.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

The Wenham, MA homeowners’ guide to generator installs

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