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Avatar for C3 Electrical Contracting
C3 Electrical Contracting
4.8(
33
)
Portable Generator - Install

Serving Castle Hayne, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Great Customer experience, Anthony did a great job very thorough, solid electrician. Excellent quality at a fair/reasonable price. I will definitely use them (Anthony) again for future electrical needs."
Large Hanging Light
Service Equipment
Service Equipment
Low voltage lighting
Low voltage lighting

+2

Response time11 hrs
Response rate91%
1 neighbors recently requested a quote
Avatar for The Electric Man LLC
The Electric Man LLC
4.6(
19
)
Portable Generator - Install

Serving Castle Hayne, NC and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Frank responded quickly to my inquiry and provided an estimate. We agreed the work would be done within a month. Frank arrived on the agreed upon installation date on time, worked efficiently, kept me apprised of his progress. He arranged for all required inspections and coordinated work with Duke Energy employees. I would definitely hire Frank for any electrical work and recommend him highly."
My jobs
My jobs
My jobs
My jobs
My jobs

+5

Response time11 hrs
Response rate93%
64 neighbors recently requested a quote
Avatar for 34 North Electrical, LLC
34 North Electrical, LLC
4.8(
3
)
Fixed Generator - InstallPortable Generator - Install

Serving Castle Hayne, NC and surrounding areas

Approved

In business since 2019

Small jobs welcome

Offers commercial services

"Through this site I was looking for a licensed electrician for an RV outlet and generator inlet install. In less than 1 week, we had a visit, quote including alternative ideas that save on additional materials, and full professional installation. The work was completed very thoroughly and clean, the instructions clear, and the price was reasonable. Overall I will hire 34 North in a ❤️ beat again. Not many skilled contractors with this service commitment level are left."
Response time8 hrs
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Odyssey Mechanical, LLC
Odyssey Mechanical, LLC
5.0(
6
)
Fixed Generator - Repair

Serving Castle Hayne, NC and surrounding areas

Approved

In business since 2017

Emergency services offered

Warranties offered

"Very timely, and friendly tech. He was efficient and was in and out within an hour even with the way my outlet installed when the house was built. Will hire them again to add more outlets in my house."
Gallery
59 neighbors recently requested a quote
Avatar for WattStar Electric
WattStar Electric
5.0(
5
)
Fixed Generator - Install

Serving Castle Hayne, NC and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today! \n

43 neighbors recently requested a quote
Avatar for Brigham And Speight Electrical Services LLC
Brigham And Speight Electrical Services LLC
5.0(
1
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install - For Business

Serving Castle Hayne, NC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

With over 60 years of experience, Brigham and Speight Electrical is who you need to take care of your home. They will handle everything from the initial consultation to making sure your property looks perfect every single time. They will always treat your property as they would treat your own, and you will be surprised how simple and easy they will make the whole process seem. Give them a call today. They are looking forward to working with you!

Boat lift motor
Boat lift motor
Boat lift motor
35 neighbors recently requested a quote
Professional Handyman Repairs
New to Angi
Fixed Generator - RepairPortable Generator - Repair

Serving Castle Hayne, NC and surrounding areas

Approved

Professional Handyman Repairs is a Maintenance, Remodeling and Handyman services company for all of your residential and commercial needs in Wilmington NC, Wrightsville Beach, Carolina Beach, Leland and surrounding areas.. Professional Handyman Repairs has years of experience delivering high-quality results in Wilmington NC and the surrounding areas..

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Generator Install questions, answered by experts

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.

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

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.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

The Castle Hayne, NC homeowners’ guide to generator installs

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