Question for electricians here. My little house has 300 amp service actually 2 x 150amp that goes to 2 150A panels .
Which panel is the neutral-ground point? Since you can only have one NG point. I have been researching generators and got me wondering.I know could just take the panel covers off and look but I wouldn't know why one vs the other,
Thanks for any info.
Both are. From the 2017 NEC:
250.58 Common Grounding Electrode. Where an ac system is
connected to a grounding electrode in or at a building or struc‐
ture, the same electrode shall be used to ground conductor
enclosures and equipment in or on that building or structure.
Where separate services, feeders, or branch circuits supply a
building and are required to be connected to a grounding elec‐
trode(s), the same grounding electrode(s) shall be used.
