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Avatar for Southern Power Systems, LLC
Southern Power Systems, LLC
4.9(
86
)
Fixed Generator - InstallFixed Generator - Repair

Serving Berkeley Lake, GA and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"Randy Hamrick(owner) was very thorough answering my questions and follow up. The installation crew was pleasant and efficient. Generator installation was completed on the date promised."
Generator Installation
Generator Installation
Generator Installation
Generator Installation
Generator Installation

+2

Response time2 days
64 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for M.J. Power LLC
M.J. Power LLC
5.0(
18
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Berkeley Lake, GA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

With over a decade of experience, we offer licensed and fully insured electrical services that prioritize both expertise and reliability. We ensure the highest standards of craftsmanship, delivering top-quality workmanship in every project we undertake. Clients can rest assured knowing that their electrical needs are in capable hands, providing them with peace of mind and confidence in the safety and efficiency of their electrical systems.

23 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Britebox Electrical Services
Britebox Electrical Services
4.5(
43
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Berkeley Lake, GA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Customers say: Super punctual

"Three light fixtures installed to existing wiring, less than an hour to survey work, perform task, and do paperwork...$387...Really surprised my elderly parents and me...Just found out through this experience, they have taken over the electrical for Ragsdale Heating and Air, liked it better when Ragsdale did their own electrical...So buyer beware when dealing with this company."
Response time1 day
7 neighbors recently requested a quote
Recommended by58%of homeowners
J & K Electrical Contractors, LLC
4.6(
12
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Berkeley Lake, GA and surrounding areas

Approved

In business since 1996

Free estimates

Credit card accepted

"We hired them last year to install a motion detector over our garage and to disconnect an outdoor junction box and wiring used by the previous owner. They did a great job and were very courteous. They were very responsive to our request and scheduled the appointment for the next day."
Response time2 days
Recommended by90%of homeowners
Avatar for Lightning Bug Electric
Lightning Bug Electric
4.7(
521
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Berkeley Lake, GA and surrounding areas

Approved

Super Service Award Winner

In business since 2003

Free estimates

Emergency services offered

"Bryson was my technical he was very polite and courteous. He uninstalled my old fan and installed mu nee fan. The job was excellent and very clean who hire him again for any of my electrical needs. Very happy with the work he did."
Undercabinet lighting to code!
Up Lighting and recessed lighting
Landscape lighting
Surround your pool to give a great ambience for social gatherings.
Light up dark pathways for safety and beauty!

+5

Response time1 day
44 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for TE Certified, Electrical, Plumbing, Heating & Cooling
TE Certified, Electrical, Plumbing, Heating & Cooling
4.7(
129
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Berkeley Lake, GA and surrounding areas

Approved

In business since 2003

Small jobs welcome

Credit card accepted

"We hired TE to install an outlet under our kitchen sink. I was worried there might be complications with the counter and cabinets in the way but everything went smoothly and Kyle did a great job with the outlet! I would hire them again for any additional electrical work we needed."
Recessed Lights
Chandelier
TE Electrician
Kitchen Lights
Pendant Lights

+5

15 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Atlanta Master Electricians
Atlanta Master Electricians
5.0(
9
)
Portable Generator - Install

Serving Berkeley Lake, GA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"Excellent Work! Prompt and professional. I've used Atlanta Master Electricians several times and they never disappoint. I highly recommend for your electrical needs - indoor and outdoor."
Foyer Lighting
Bathroom Lighting Contemporary Upgrade
Dining Room Lighting Upgrade
Bathroom Mirror Lighting Upgrade
Chandelier Foyer Lighting

+7

Response time10 hrs
4 neighbors recently requested a quote
Recommended by88%of homeowners
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Showing 1-10 of 117
Generator Install questions, answered by experts

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

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.

The Berkeley Lake, GA homeowners’ guide to generator installs

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