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TRUSTED BY DENVILLE, NJ HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon1k+
    Verified electrical services reviews

Verified Reviews for Electrical Service pros in Denville, NJ

*The Angi rating for Electrical Service companies in Denville, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.

*The HomeAdvisor rating for Electrical Service companies in Denville, NJ is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Electrical Service needs.

Last update on May 22, 2026

Find Electricians in Denville

Avatar for First Class Electric
First Class Electric
4.8(
112
)
Electric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation+10 more

Serving Denville, NJ and surrounding areas

Approved

In business since 2007

Emergency services offered

Credit card accepted

"I highly recommend First Class Electric. I called this morning and by 10 am Joey the technician was calling me confirming he was on his way. The operator who made the appointment was very friendly and helpful. The technician Joey was very knowledgeable and friendly. He is an asset to your company! He understood what needed to be done and explained his plan. He made sure I was satisfied and answered every question. I will definitely use this company again but I want Joey to be the technician. Thank You!!!"
Generator
Generator
Generator
Generator
Generator

+21

2 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Best Dressed Electric
Best Dressed Electric
5.0(
32
)
Electrical Wiring or Panel UpgradeCeiling Fan - InstallCeiling Fan - Repair+14 more

Serving Denville, NJ and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Jeremy was quick to respond, arrived right on time, and did a phenomenal job faster than most others would. He was very neat and professional and I highly recommend his services to anyone looking to have an electrical project completed."
Electrical Project
Home Automation Project
Home Automation Project
Electrical Project
Wall box

+33

Response time2 days
Response rate100%
1 neighbors recently requested a quote
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Avatar for B-Tec Electric Co LLC
B-Tec Electric Co LLC
5.0(
166
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel UpgradeElectric Vehicle Charging Station Installation+10 more

Serving Denville, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Free estimates

Warranties offered

"Second time using B-Tec electric and I think now they are my go to electrician. I used them previously to upgrade my panel to 200 Amp and this time to hook up my new electric water heater. Both tasks were completed perfectly and fairly priced. I highly recommend B-Tec electric!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+123

Response time8 hrs
Response rate100%
2 neighbors recently requested a quote
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Avatar for Anzalone Electric & Lighting, LLC
Anzalone Electric & Lighting, LLC
4.9(
112
)
Electric Vehicle Charging Station Installation - Materials Not ProvidedElectric Vehicle Charging Station Installation - Materials Provided by ConsumerElectrical Wiring or Panel Upgrade+2 more

Serving Denville, NJ and surrounding areas

Approved

In business since 2008

Free estimates

Small jobs welcome

"Scott, Was accommodating to my outlet and ceiling fan needs. He showed up on time. Did the job right and at a fair price. I would definitely use Anzalone Electric and Lighting again for future electrical work."
Finished panel
Electric Tie in
installing breakers
The old mast
Response time8 hrs
Response rate87%
9 neighbors recently requested a quote
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Avatar for RYB Electric, LLC
RYB Electric, LLC
5.0(
22
)
Electrical Switches, Outlets & Fixtures - Install or RepairCeiling Fan - InstallElectric Vehicle Charging Station Installation - For Business - Materials Not Provided+12 more

Serving Denville, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"RYB Electric is the Best!!! Very courteous, knowledgable and punctual. I highly recommend hiring RYB Electric!!!"
Emergency Call
Emergency Call
Panel Replacement
Panel Replacement
Response time4 hrs
Response rate95%
1 neighbors recently requested a quote
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R.A.P Electric Company Inc.
5.0(
19
)
Electric Vehicle Charging Station InstallationElectric Vehicle Charging Station Installation - For BusinessElectric Vehicle Charging Station Installation - For Business - Materials Not Provided+10 more

Serving Denville, NJ and surrounding areas

Approved

Super Service Award Winner

Customers say: True professional

"I was Super Pleased with the work that Roy from RAP electric did- the work was carefully and safely taken car of- the fee was Very fair and I would and will hire RAP Electric again and again, and I have recommend him to many of my friends -"
Additional Photos
Response time8 hrs
Response rate100%
Recommended by66%of homeowners
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Avatar for MD Electrical Solutions, LLC
MD Electrical Solutions, LLC
4.9(
126
)
Electric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Switches, Outlets & Fixtures - Install or RepairElectric Vehicle Charging Station Installation - For Business - Materials Not Provided+4 more

Serving Denville, NJ and surrounding areas

Approved

In business since 2007

Free estimates

Small jobs welcome

"Mark was quick to call and help schedule my job. He was helpful and professional while explaining all of my electrical needs"
Panel Swap - before
Panel Swap - After
Panel Swap - After
Kitchen fixtures
Kitchen fixtures

+21

Response time4 hrs
Response rate89%
2 neighbors recently requested a quote
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Avatar for RAP Electric Co., Inc.
RAP Electric Co., Inc.
4.6(
137
)
Ceiling Fan - InstallElectrical Switches, Outlets & Fixtures - Install or RepairPortable Generator - Install

Serving Denville, NJ and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"Roy was excellent took the time to find and solve my electrical problem. It was not easy to find. Explained process. Very curtious. Contacted me twice afterwards to make sure problem was solved."
Response time2 hrs
Response rate93%
Recommended by90%of homeowners
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Hi Tech Electric
4.5(
78
)
Ceiling Fan - InstallCeiling Fan - RepairElectric Vehicle Charging Station Installation - For Business - Materials Not Provided+15 more

Serving Denville, NJ and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"Bill and his team were outstanding. They accomplished a large electrical task in short time and even reorganized the circuit breaker and rewired some old 220s and converted to 110s. Highly recommend and would use them again on future projects."
Recommended by74%of homeowners
Request Quote
APOLLO ELECTRICAL CONTRACTORS LLC
5.0(
40
)
Electric Vehicle Charging Station Installation - For Business - Materials Not ProvidedElectric Vehicle Charging Station Installation - For Business - Materials Provided by ConsumerElectric Vehicle Charging Station Installation - Materials Not Provided+7 more

Serving Denville, NJ and surrounding areas

Approved

In business since 1999

Free estimates

Small jobs welcome

"Apollo electric was well informed and I will use them again."
Recommended by90%of homeowners
Request Quote
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Showing 1-10 of 562
Electrical questions, answered by experts

To install an outlet from existing wiring, you’ll need to choose a location where you can already access existing wiring. The easiest way to do this is to install an outlet on the other side of the wall of an existing outlet. 

Since the wiring is already in place, all you have to do is connect a new cable to the existing wiring and then connect the correct wires through the wall—to the new electrical outlet. Place your new outlet into the opening in the wall and then connect the correct wires to the appropriate terminal screws.

Each meter should have a serial number printed or engraved on the face of the meter. Make sure the serial number of the meter you are reading matches your account with the power company. If you live in an apartment complex, the meters are likely located all together. Yours should be labeled according to your apartment unit.

Single-pole switches are simple circuits designed for lower voltages. As such, they don’t require the complex wiring of switches that need to supply power to larger devices and appliances. This is why single-pole switches commonly go in bathrooms, closets, and other small rooms that power a low-watt light fixture. One wire creates the circuit from the power supply, the other goes to the fixture, and the final wire provides safety mechanisms through grounding.

Switching the hot and neutral wires in an outlet or receptacle, a condition known as reverse polarity, is dangerous. While the outlet will still function and provide power, it creates a significant electrical shock hazard because anything plugged into it will remain electrified even when switched off. If you touch a conductive part of the appliance, such as the metal components of a toaster, you could receive an electric shock.

If you've ever tried to run your dishwasher while drying your hair, you’ll understand why dedicated circuits are essential for preventing blown fuses. Appliances that require more electricity than the circuit can handle could blow fuses, trip breakers, overheat, and risk an electrical fire. 

Having a dedicated circuit ensures that your appliance gets the current it needs without overloading the other circuits in your home.

The Denville, NJ homeowners’ guide to electrical services

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