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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon2k+
    Verified electrical services reviews

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Avatar for Service Electric Northwest, Inc.
Service Electric Northwest, Inc.
4.6(
132
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel UpgradeCeiling Fan - Install+8 more

Serving Wilsonville, OR and surrounding areas

Approved

Super Service Award Winner

In business since 1999

Free estimates

Credit card accepted

"We hired John to fix the electrical panel in our boathouse, and then again to upgrade all the lighting there, and then again, to replace the electrical panel in our new house. He came out right away, on time, fixed everything in each case, and was very reasonably priced for the work. He's now our go-to electrician."
Response time4 hrs
9 neighbors recently requested a quote
Recommended by92%of homeowners
LM Electric, LLC
4.8(
21
)
Ceiling Fan - InstallElectrical Switches, Outlets & Fixtures - Install or RepairElectrical Switches, Outlets & Fixtures - Install or Repair - For Business

Serving Wilsonville, OR and surrounding areas

Approved

In business since 2010

Customers say: Quick response

"Lloyd was available within a day to fix our faulty electrical outlets. He also checked every electrical outlet & lighting problem very thoroughly & quickly. Will definitely hire LM Electric LLC again!"
Recommended by93%of homeowners
Avatar for Chase Power, LLC
Chase Power, LLC
4.8(
72
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel Upgrade

Serving Wilsonville, OR and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"I would highly recommend Chase Electric! Complete rework of my Circuit Breaker Box and upgrade of old wiring. Did a fantastic job - Was on time and kept me informed all the way thru the project. Will be using them in the future for any electrical needs! Thanks for job well done!!"
FOCALPOINT SIGN
GFCI FOR HOT TUB AND RECEPTACLE FOR RV
30A  RECEPTACLE
Response time2 days
Recommended by95%of homeowners
Avatar for Connections Electric Group Inc.
Connections Electric Group Inc.
5.0(
5
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectrical Wiring or Panel UpgradeElectrical Switches, Outlets & Fixtures - Install or Repair - For Business+7 more

Serving Wilsonville, OR and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

Since 1990, Connections Electric has been the trusted name for electrical services in Salem, Oregon. As a leading electrical contractor, they specialize in a full spectrum of solutions, catering to the unique needs of residential, commercial, and industrial clients. From routine maintenance and electrical repairs to complex new construction wiring and energy-efficient upgrades, their experienced team is committed to delivering reliable, high-quality results. Connections Electric ensures every project, including low-voltage systems and emergency repairs, is handled with meticulous attention to detail and a dedication to customer satisfaction. "We harness the power of the Gods and make it work for you!

3 neighbors recently requested a quote
Avatar for Murphy Family Electric
Murphy Family Electric
4.4(
2,239
)
Electric Vehicle Charging Station Installation - Materials Not ProvidedElectric Vehicle Charging Station Installation - Materials Provided by ConsumerElectrical Wiring or Panel Upgrade

Serving Wilsonville, OR and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"Murphy Family Electric is an awesome company with very competent technicians and reasonable rates. They make the whole process pretty straightforward. I had used them to get my Tesla charger in 2018 (Cost: $799 including material). I was so impressed with their work that when I had a complex electrical job - installing a new 120v outlet requiring a new wire from the circuit breaker - I did not get any quotes but just booked them. That job was done very professionally as well (Cost: $949). Fast forward to Mar 2025, my tesla charger had problems with over heating and intermittent power loss. I called Murphy Family Electric and they sent a technician the same day who came and adjusted/cleaned the connections and spent 30 mins fixing the problem. And to my surprise the company did not even charge me anything for this. So on top of everything else you can add absolutely fantastic customer service to their list of attributes."
Sean Murphy
Sean Murphy
Sean Murphy
Half/Full Day Deal
Sean Murphy

+1

Response time4 hrs
Response rate100%
Recommended by85%of homeowners
Avatar for ATR Electric
ATR Electric
5.0(
7
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectric Vehicle Charging Station Installation - Materials Not ProvidedElectrical Wiring or Panel Upgrade+10 more

Serving Wilsonville, OR and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

With over 7 years of experience ATR ELECTRIC is your trusted choice for all of your electric needs. Quality is the foundation of every project. As a licensed, independent electrical contractor serving Portland and the surrounding communities, every job is approached with one goal in mind: getting it done right the first time. No shortcuts, no rushed work, and no unnecessary callbacks. Just dependable craftsmanship built to last. Give us a call today for a free estimate!

Kitchen and bath remodel
Kitchen and bath remodel
12 neighbors recently requested a quote
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Electrical questions, answered by experts

It’s possible to distinguish a positive black wire from a negative black wire if you know what type of circuit the wires are in. If it’s an alternating current (AC), then black wires are positive. If it’s a direct current (DC), then black wires are negative. 

Sometimes, a circuit has two black wires. In that case, the positive black wire will be solid black while the negative black wire will have a white stripe on it. If you’re still unsure, you can use a multimeter to check.

They can vary—a lot. For example, while the EU continues to move toward broader standardization, many different types of outlets still exist from country to country. Some local standards cared about polarization, and some didn’t. It’s similar to other countries around the world.

Generally, you’re less likely to find polarized outlets outside North America. However, alternative plugs and outlets often incorporate precautions so that accidentally touching live prongs on a plug is hard or impossible. You may also find interesting regulations overseas that limit the use of outlets in bathrooms or near sinks to decrease the chance of shock.

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.

While washers and dryers do not require a GFCI (ground fault circuit interrupter) outlet to function properly, electrical codes often mandate their use for safety. The National Electrical Code (NEC) requires GFCI protection for all outlets within six feet of a water source. This means a washer and dryer must be plugged into a GFCI outlet if they are installed in locations like a laundry room, utility room, garage, or basement. In other areas without a nearby water source, there is no specific requirement, but using a GFCI outlet is still recommended for extra peace of mind. It is always best to consult your local codes and regulations to ensure compliance and safety.

This depends on how many outlets you have and the current status of your electrical system. The cost to ground an outlet clocks in at $75 to $480 per outlet, so multiply that by the number of outlets in your home to arrive at a rough estimate. However, this is for simple projects with no obvious issues with the system. Your final bill could vary widely from your calculations.

The Wilsonville, OR homeowners’ guide to electrical services

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