Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 20,534
Your exposure to lightning induced surges, especially on PV side, may vary.
Utility line is expected to carry all sorts of nasties. UL listed products are protected to some extent. Midnight or other products with good size MOV should do considerably more.
MOV can fail shorted (therefore shorting out supply). The ones in Midnight (which you can buy individually from DigiKey) are connected in series with a thermal protection device so will switch to open. That can be wired to an indicator light, as Midnight has done.
Utility line is expected to carry all sorts of nasties. UL listed products are protected to some extent. Midnight or other products with good size MOV should do considerably more.
MOV can fail shorted (therefore shorting out supply). The ones in Midnight (which you can buy individually from DigiKey) are connected in series with a thermal protection device so will switch to open. That can be wired to an indicator light, as Midnight has done.