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Avatar for Mister Sparky by Wise Electric Control, Inc.
Mister Sparky by Wise Electric Control, Inc.
4.6(
293
)
Fixed Generator - Repair

Serving Tega Cay, SC and surrounding areas

Approved

In business since 1988

Free estimates

Emergency services offered

"After Tropical Storm Helene took down a large tree which took down my Duke Energy power line on side of my home, Chris came and worked 2 full days and got all the electrical service back up and running, They also were sooooo helpful with our 2 year old Generac backup generator which we have had issues with and will soon be returning to address our generator issues. The Field Supervisor, Brandon, went above and beyond by calling Generac and explaining our generator issues. Mister Sparky will from now on be our maintenance contractor after our last one failed us when we really needed them. It was a stressful 8 days without power and using a generator that was leaking oil and not knowing if or when it might blow -up. All the guys at Mister Sparky who came by and helped were professional and truly cared about taking care of us. I will forever Trust and Appreciate Mr Sparky for all my electrical needs."
 14KW Generator System
 Voltvault Breaker Panels
  Voltvault Breaker Panels
 Back-Up Generator Residential
  Back-Up Generator Commercial

+13

Recommended by83%of homeowners
Avatar for Power Source Electrical Services Inc.
Power Source Electrical Services Inc.
4.3(
8
)
Fixed Generator - InstallFixed Generator - Repair

Serving Tega Cay, SC and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Great follow through, good pricing. The generator required several trips and follow-up items because it required different inspections. They did a great job at following up on these steps and the generator works perfectly. Since that time we called them for some smaller electrical jobs. They are very detailed oriented, an example would be that I gave what I thought I wanted and they gave feedback based on their experience showing a better way to do it. I welcomed this and was happy they suggested it."
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+2

58 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Prime Time Electric
Prime Time Electric
5.0(
11
)
Fixed Generator - Install

Serving Tega Cay, SC and surrounding areas

Approved

In business since 2025

Free estimates

Small jobs welcome

At Prime Time Electric, we’re more than just electricians—we’re your neighbors dedicated to powering your homes and businesses. With years of experience, our certified team provides electrical services that light up York County, and beyond. From generator installation to electrical repair, we bring expertise and care to every project, ensuring your systems run smoothly and safely.\n\nOur passion for excellence drives us to offer tailored solutions, whether it’s installing lighting fixtures, provision of whole-home surge protection, service and repair, in-home generator installation or setting up EV charging stations. We serve our communities with reliable electrician services, making Prime Time Electric a name you can trust for all your electrical needs.

project photos
61 neighbors recently requested a quote
Avatar for Honesty Electric, LLC
Honesty Electric, LLC
4.9(
251
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business+2 more

Serving Tega Cay, SC and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Hired honest electric to install outlet by my well. They did a great job quality work. We ran into a problem and they handled it like try professionals. They fixed the issue and ensured everything was to my satisfaction. How contractors handle problems is where you see the quality of their character. I would definitely hire them again."
Church house remodel
Church house remodel
Church house remodel
Church house remodel
Church house remodel

+74

Response time1 day
15 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Mr. Electric of York- Rock Hill
Mr. Electric of York- Rock Hill
5.0(
5
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+2 more

Serving Tega Cay, SC and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Licensed & Bonded Electrician company. We do residential work, including repair and upgrades to homes. We believe in quality work and spending the necessary time to do things correctly. We use quality parts such as Siemens, GE, Square D, and Cutler Hammer.

Outdoor Light
Lighting and switch
Lighting and switch
My jobs
My jobs

+43

5 neighbors recently requested a quote
Avatar for WyattWorks
WyattWorks
4.5(
60
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Tega Cay, SC and surrounding areas

Approved (Corporate)

In business since 1979

Emergency services offered

Warranties offered

"Scott was on time and very professional. He examined the current installation of the toilets and provided me with options to address the problem and install new toilets. I enjoyed meeting him and appreciated his expert opinions. I am still getting estimates and will certainly keep this company at the top of my list. Scott is very easy to communicate with and will brighten your day with his smile."
Additional Photos
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+1

Response time12 hrs
9 neighbors recently requested a quote
Recommended by90%of homeowners
KG3 Electrical
4.5(
8
)
Portable Generator - Install

Serving Tega Cay, SC and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

We offer over 10 years of experience in the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

Response time12 hrs
6 neighbors recently requested a quote
Recommended by100%of homeowners
Showing 1-10 of 42
Generator Install questions, answered by experts

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

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.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

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. 

The Tega Cay, SC homeowners’ guide to generator installs

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