Surge protection installation: what to know

What the job involves, what changes the price, and what to ask a pro.

What surge protection installation is

Surge protection installation fits a whole-house surge protector at the electrical panel, or point-of-use protectors at key outlets, to guard electronics and appliances against voltage spikes. The panel-mounted device is the first line of defense, and the point-of-use units handle what gets past it or starts inside the home. The electrician sizes the device, connects it to the correct breaker, and bonds it to the grounding system.

Signs you need it

  • Electronics such as computers, televisions or networking gear have failed after storms or outages
  • Lights flicker or equipment resets during heavy utility switching or nearby lightning
  • You have expensive appliances with control boards, such as a heat pump, a furnace or a solar inverter
  • The home has a long utility service line or sits in an area where storms are common
  • You are adding an EV charger, a solar system or a heat pump that makes surge protection worth reviewing
  • The panel has no surge device, and the customer wants one for the whole home

What the pro does

  • Check the panel's capacity, the breaker spaces and the grounding system where the device will connect
  • Choose the whole-house device rating and the mounting location, close to the main service
  • Install a dedicated breaker for the surge device, sized to the device's requirement, and run the conductors
  • Bond the device to the grounding system with the correct conductor size and the shortest practical path
  • Install point-of-use units at key outlets if the customer wants protection for specific equipment
  • Test the device's status light and confirm the connection, and label the breaker at the panel

What changes the price

Every job is different, so we do not publish prices. These are the things that move the quote up or down.

  • Whole-house device type and rating, and the number of protected modes it covers
  • Whether the panel has space for a dedicated breaker, or needs an upgrade first
  • Condition of the grounding system, which may need repair before the device can work well
  • Number of point-of-use units installed, and the outlets they protect
  • Distance from the device to the panel and the grounding electrode
  • Whether a permit and inspection are required for the work

What a written quote should spell out

  • The whole-house device model, rating and the number of protected modes
  • Breaker size and the wire size used for the device
  • Grounding and bonding work, including any repair needed
  • Point-of-use units included, with the outlets they protect
  • Permit, inspection and test results

Questions to ask before you hire

  • What rating of whole-house protector do you recommend for my service?
  • Do you check the grounding before you connect the device?
  • Will the device need its own breaker, and where will it sit in the panel?
  • Which outlets should have point-of-use protection, and why?
  • How will I know if the device has done its job and needs replacing?
  • Does the device cover the equipment I plan to buy, such as a heat pump or solar inverter?

Red flags

  • Sells a point-of-use strip as a whole-house protector
  • Connects the device to a breaker or a wire that is not sized for it
  • Skips the grounding check before installing the device
  • Promises that the device protects against every surge, including direct lightning strikes
  • Does not show the device's status light or explain it

What you can do yourself

Plugging a point-of-use surge strip into a protected outlet and checking its status light are safe. Mounting a whole-house device, connecting it at the panel, and checking the grounding need a licensed electrician with the power off at the service. A surge device that has been hit by a large event can fail without warning, so have a pro check its status light after storms.

Licenses and permits

Surge protection installation is commonly done by licensed electrical contractors when it connects to the panel, and point-of-use strips need no license. A permit may be required for the panel work. Check with your state or local licensing agency and building department for the rules that apply to the job.

Surge protection installation questions

Does a surge protector stop lightning damage?

No device can stop every surge. A whole-house protector reduces the voltage spikes that reach the home, and point-of-use units handle what gets through. A direct lightning strike can still cause damage, which is why a grounding check matters.

Is a power strip the same as a surge protector?

No. A power strip only adds outlets. A surge protector has a rated device inside that limits voltage spikes. Check the rating and the status light on the unit you buy.

How long does a surge protector last?

The device wears out after it absorbs surges. Its status light or indicator shows whether it still protects. An electrician can check the device and replace it when it has reached the end of its protection.

About this guide

This national guide is written and checked by infinibell. Rules and conditions differ by place, so local pros are credited on guides for the cities they serve, not on national ones.

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