EMF Lightning ?

verdigoverdigo Solar Expert Posts: 428 ✭✭
Tips the season here in Southern KY. I work about a hundred miles from where my system resides. I have been shutting my system down when the forecast is for thunderstorms. The question is ..... Is damage that much more likely with the system operating than with it turned off? Also how many SPDs and what is the priority for placement if not all are purchased at the same time?

I understand that it won't matter in the case of a direct hit.

Thanks.

Dennis

Comments

  • waynefromnscanadawaynefromnscanada Solar Expert Posts: 3,009 ✭✭✭✭
    verdigo wrote: »
    thunderstorms. The question is ..... Is damage that much more likely with the system operating than with it turned off? Dennis

    Probably not much difference. However, if the devices are disconnected from all external wiring, breakers off etc, you would be less likely to suffer damage - - unless a very close or direct strike.
    When lightening happens here, I pull all switches and breakers around controllers and inverters, both inputs and outputs on all devices, then sit back and hope for the best.
    If the wires are still directly connected, even small voltage spikes will be fed right into the devices. If you want to get safer still, disconnect the wires and move them 10 feet away from the devices.
  • verdigoverdigo Solar Expert Posts: 428 ✭✭
    That is pretty much what I have been doing. Just hate the thought of leaving it off for the day.
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