Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

We have some pretty terrible storms and a pretty terrible power company where I live. We experience power surges quite often. So I'm interested in installing a whole-house surge protector. Is this something I would probably want an electrician to install, or is it something I could do myself?

share|improve this question
1  
The correct answer will depend on where you live as the laws on who can do what to electrical systems vary. I'd get an electrician for this sort of thing though. –  ChrisF Aug 15 '10 at 18:43
add comment

1 Answer

up vote 5 down vote accepted

It partially depends on your competency with electrical work, and what kind of surge protector you get. There are two basic models I know about:

  • Square-D makes a module that mounts the same way as a standard QO breaker in the panel: http://surgelogic.com/residential/surgebreaker-secondary-surge-arresters/. It is very easy to hook up, you plug it in just like a breaker, and simply run the one line to ground. (This is a "Type 2" device). There are other companies that make these as well, be sure to get one that can fit in your panel (each company does it differently).
  • There are also several types of external boxes which go beside the main panel, and hook up to a 220V circuit. These are possibly a bit harder to install (you need to run conduit typically), but may offer better protection and sometimes also have surge protection for phone lines and cable. These come in both Type 1 and Type 2.

If you're comfortable opening the panel and installing a new breaker, then really either of these methods is okay, though the first is definitely easier.

The "type" I referenced above boils down to (and this is new to me, correct me if I get it wrong):

  • Type 1 are designed for direct lightning strikes, though you may need a lighting protection system (rod) to take advantage of it.
  • Type 2 are designed for indirect lightning strikes.

Note, having this doesn't mean you don't need surge protection on individual devices. It certainly takes a way a lot of the risk, but it doesn't eliminate it. For expensive items or things that are very sensitive (eg, computer, home entertainment system) it's worthwhile to put a powerbar-style surge protector right at the equipment).

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.