Question:
Do we need to provide SPD at the Automatic transfer Switch (Emergency side) to meet the requirement of the UL master label for Lightning protection system? Currently we have it at the main switchboard (main service entrance) but no protection from the generator side.
Thanks,
Do we need to provide SPD at the Automatic transfer Switch (Emergency side) to meet the requirement of the UL master label for Lightning protection system? Currently we have it at the main switchboard (main service entrance) but no protection from the generator side.
Thanks,
