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Avatar for John Buckley Electric, Inc.
John Buckley Electric, Inc.
4.8(
120
)

Serving Colma, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1989

Free estimates

Customers say: True professional

"I would definitely hire John again. He was on time, did a great job & was courteous and clean. I had old bad wiring & he was able to clean it up & install new fixtures without any hiccups. Definitely recommend!"
Response time3 hrs
Response rate91%
24 neighbors recently requested a quote
Avatar for CA Electrical Group 24/7
CA Electrical Group 24/7
4.7(
61
)

Serving Colma, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Ben did a great job installing our bathroom exhaust fan. He was on time, very clean and charged me the price he quoted. He even wore protective booties over his shoes while inside the house. I'm now looking for more projects for Ben to do. Thank You again, see you soon Ben."
apartment rewire
main service panel upgrade multi meters
tesla
new 3 phase commercial electrical panel
solar ready main panel

+123

Response time5 hrs
4 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for GAETAWAY ELECTRIC INC
GAETAWAY ELECTRIC INC
5.0(
13
)

Serving Colma, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Warranties offered

"Not only was the job done in a timely fashion but was very clean… the customer service was top tier! …. Communication, punctuality, and sense of pride in their work lets you know you hired the right contractor for the job! …. They left the work area cleaner then it was before they arrived.. the work I had done was a panel upgrade and also install my Tesla EV charger… real game changer no more stopping at superchargers to charge my Tesla!…. Thank you to Gaetaway electric I’m able to commute to work an home no more pit stops!"
Exterior LED lighting and address
Pergola ceiling fan/lighting.
Tesla home electric vehicle charging station and conduit install.
Commercial LED high bay lighting.
Generac home electric vehicle charging station, conduit/outlet install.

+9

Response time1 day
8 neighbors recently requested a quote
Recommended by16%of homeowners
Avatar for pyramid electric
pyramid electric
4.9(
7
)

Serving Colma, CA and surrounding areas

Approved

In business since 2022

Emergency services offered

Customers say: True professional

"Alexis responded quickly, gave a fair estimate while explaining the process quickly. He was friendly, knowledgeable, efficient and thorough. I would highly recommend for any electrical work needed."
Upgrading an electrical panel
Electrical Project
Electrical Project
Taking pride on my craftsmanship
Electrical Project

+9

Response time2 days
1 neighbors recently requested a quote
Recommended by57%of homeowners
Emanuel Morales Electric
5.0(
28
)

Serving Colma, CA and surrounding areas

Approved

In business since 2018

Emergency services offered

Small jobs welcome

"Emanuel (and his daughter as helper!) did a great job installing a 240v EV charging station at my home last month. He was able to give me a bid after I sent him some pictures and rough measurements and when he came out to my home to do the installation, recommended a much better way to do the install (that no other electrician, even those who gave me bids after in-person visits, offered as an option). It's been working fine thus far.. I'd definitely recommend Emanuel. Thanks."
Response time3 hrs
Response rate94%
Recommended by92%of homeowners
Avatar for ARECHIGA POWER
ARECHIGA POWER
5.0(
12
)

Serving Colma, CA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Ray was instrumental in upgrading the electrical in my townhome, including installing new recessed lights, light fixtures, replacing receptacles with new ones and modern cover plates. He also relocated and installed a new subpanel providing dedicated circuits to appliances and the newly installed recessed lights. Ray is incredibly knowledgeable and very easy to work with and I would recommend him and happily use his services again."
Living room
Kitchen
Meter Main Panel Upgrade
Meter Main Panel Upgrade
Meter Main Panel Upgrade

+36

Response time1 day
Recommended by66%of homeowners
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Showing 1-10 of 356
Generator Install questions, answered by experts

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

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.

Yes, installing a generator usually increases your property value because buyers are getting the added peace of mind knowing they’ll be able to maintain power through blackouts. In most cases, you should see close to a 100% return on investment (ROI). Keep in mind that home generators usually need a permanent foundation, and installing a concrete slab will likely raise your property taxes slightly.

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.

The Colma, CA homeowners’ guide to generator installs

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