1

By I did install 2 projector and the costumer wants to protect the projector installing a surge protector plugs the projector are install 30’ high. My questions is can i install a surge protector device at the sub panel where I get power from even this sub panel doesn’t have a main breaker just a main lug

4
  • 1
    If you are doing electrical work for hire you need a license to do that, which comes with a bunch of training to do that. If you lack the training and the license, you should not being doing electrical work for customers.And if you do have those but still have questions, this is not the site for you.
    – Ecnerwal
    Feb 29 at 3:12
  • 3
    I’m voting to close this question because it's not on topic, being a question from somone doing electrical work for a customer.
    – Ecnerwal
    Feb 29 at 3:19
  • 1
    @Ecnerwal All true. But that being said, if the question didn't say "the customer" then it could just as easily be someone doing their own electrical where allowed to do so. And in that situation this would be a perfectly reasonable question. I'd argue it is a little different from the "apartment rental" situation because there nobody but a licensed electrician is (usually) allowed where here in many jurisdictions homeowner is allowed. Feb 29 at 4:56
  • Typically, AHJs waive the "pro electrician only" rule for basic stuff like swapping a receptacle, switch, light fixture, breaker, water heater, etc. Installing a snap-in "fits like a breaker" SPD would likely qualify. Yes, it'd be fine in a subpanel, and provide much better surge protection than any plug-in or "power strip" type would ever provide. This is a suitable application for pigtailing the surge suppressor off the same breaker as the thing being protected. Note that certain breakers are labeled for 2 wires per terminal (don't do it otherwise). E.G. Square D QO type, and Pushmatic. Feb 29 at 19:15

1 Answer 1

1

A Type 2 SPD can go anywhere downstream of the main

A Type 2 SPD can be placed, on an appropriate breaker of course, in any panel in the distribution system.

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