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TRUSTED BY NEWCASTLE, ME HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon60
    Verified electrical services reviews

Top-Rated Electricians in Newcastle - Updated Nov 2026

Avatar for Marsh River Electrical LLC
Marsh River Electrical LLC
4.7(
64
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectric Vehicle Charging Station InstallationElectric Vehicle Charging Station Installation - For Business+10 more

Serving Newcastle, ME and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Marsh River traveled over an hour to come out to my house to redo my electrical from the panel to the pole, put the wires underground (because they were not before) put a new electrical box and meter on the pole. Did a great job and knew exactly what they were doing! Just a side note: I thought the reason the outlets on the back wall of my room didn’t work was because of mice eating our wires. Whoever did the electric before must not have done it correctly because the outlets are now working!"
1 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Veteran Wire Electric LLC
Veteran Wire Electric LLC
5.0(
5
)
Fixed Generator - InstallElectric Vehicle Charging Station Installation - For Business - Materials Not ProvidedElectric Vehicle Charging Station Installation - For Business - Materials Provided by Consumer+7 more

Serving Newcastle, ME and surrounding areas

Approved

In business since 2024

Credit card accepted

VETERAN WIRE ELECTRIC LLC 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.

Panel
14 neighbors recently requested a quote
Generators of Maine, Inc.
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Newcastle, ME and surrounding areas

Approved

In business since 2014

Free estimates

Offers commercial services

"Generators of Maine just completed the installation of a 14kw generator with parallel transfer switches, to protect 2 separate metered panels at a rental property that I own. I didn't even know that this was possible, until Doug Sawyer suggested it. The incremental cost of protecting the additional panel with the parallel transfer switch arrangement was a fraction the cost of an additional generator and transfer switch. Throughout the job, Doug and his crew were awesome. I am a terrible snoop who enjoys technology, so I hung around just watching and learning. They didn't seem to mind my presence and were friendly and informative through out the install. Every aspect of the job was 100% top-notch. Doug also managed to under bid his nearest competitor on every component and aspect of the job, including the annual maintenance contract, which I deemed to be worth the $$$. I highly recommend Generators of Maine."
Response time4 hrs
Recommended by80%of homeowners
Avatar for W B Lightning Rods
W B Lightning Rods
4.6(
372
)
Lightning Protection - Install or Repair

Serving Newcastle, ME and surrounding areas

Approved

In business since 2001

Free estimates

Warranties offered

"William and staff responded promptly to my request for service with reasonable pricing. They arrived at the house at the agreed upon time, were respectful of my property, explained the process and completed the work within the specified time frame. They were pleasant, easy to work with and installed a quality lightning rods system. I highly recommend them."
lightning protection
 Residential LPS
lightning protection
 Residential LPS
lightning protection

+79

Response time1 day
145 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Generator Supercenter of Maine
Generator Supercenter of Maine
4.6(
40
)
Fixed Generator - InstallElectrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation - Materials Not Provided+1 more

Serving Newcastle, ME and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Drew and the entire crew made this experience seamless. The installers were polite, friendly, competent and and tidy. The pre and post support was fantastic, the expectations around logistics, installation timing and ongoing service support was spot on. These guys are pros and the solution cost was clearly the best in my search for authorized service providers of Generac generators. Hire them you won't go wrong. Vin M Dover NH"
Generator Install
18KW Installation
Preparation for the day
Photos
Response time2 days
Response rate100%
71 neighbors recently requested a quote
Avatar for Casco Bay Generators LLC
Casco Bay Generators LLC
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Newcastle, ME and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

We are proud to be a Veteran-operated, Titanium Level Kohler® licensed and insured generator dealer. We teamed with Kohler® to give you peace of mind that you are working with a dealer-trained, factory-authorized provider to handle these appliances. We offer all Kohler® and Generac warranties and maintenance services. These are the industry’s best products for backup protection at your home or office.\nWe are also proud to work with Efficiency Maine, offering discounts, rebates, loans, and other initiatives to promote high-efficiency equipment that help Maine’s homes and businesses reduce their energy costs and lower their greenhouse gas emissions.\nProfessionally installing a standby generator and/or heat pump for your home or business is one of the best investments you can make. .\nWe at Casco Bay Generators & Heat Pumps keep the power on 24 hours a day, 365 days a year.

Standard installation.
Response time2 days
Response rate92%
10 neighbors recently requested a quote
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Electrical FAQs, answered by experts

Yes, you can use a 3/0 AWG wire for a 200 amp service, but only if it is made of copper, as 3/0 copper wire has an allowable ampacity of 225 amps. If you are using aluminum or aluminum copper-clad wire, you need to use at least 4/0 AWG.

The common, marked as COM or C, is one of the terminals found in your light switch. It houses the live wire that supplies the input voltage. The other terminals, marked as L1 or L2, are the outputs to the light fixtures. Depending on if you have a one-way or two-way switch, you’ll either have just an L1 terminal or both an L1 and L2 terminal.

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. 

For most applications, you won’t need a neutral for 240V. There are certain codes and regulations that differ between areas so just because you technically may not need one in order for the device to function properly, it may still be a local requirement. Professionals in your area know the requirements, which is just another reason to hire one instead of taking on a project that is frankly not very DIY-friendly.

The Occupational Safety and Home Administration (OSHA) requires an electrical panel to have a minimum of three feet (36 inches) of room from the front of the panel to the closest obstacle. In this case, the word obstacle refers to nearly everything, including walls, machines, and other fixed objects. Additionally, panels require at least 6½ feet of headroom in the area directly in front of the fixture. These requirements help ensure safe use of the panel and allow electricians plenty of room to work.

The Newcastle, ME homeowners’ guide to electrical services

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