I've scanned the ABYC e11 recommendations, but can't find it. What size cable should be used to connect the AC Grounding Bus bar back to the Engine
/ DC Main Negative Bus bar?
I was doing a little DC re-wiring the other day, and it finally hit me that when my electrical system
was installed three years ago, the installer connected the AC Grounding bus to the DC negative bus bar mounted behind the combined AC/DC panel. He disregarded the installation
diagrams... I've seen the connection many times when adding new power connections, but I'd never really noticed it.
The distance from DC panel bus bar to the DC Main negative bus bar is about 15', and uses 1/0 cable. The AC Grounding bus is located behind the AC/DC panel, next to the DC panel bus bar, and is connected to it using #2 cable.
What size cable should I use to correct the installation
error? The length would be basically the same length as the DC panel bus bar connection to the DC Main Negative bus bar. #1/0 would be way overkill for the AC system, as I believe #2 would be. But would #10, the same size as the AC Mains cables
coming from the shorepower connector and galvanic isolator
(no, not an isolation xformer yet), be sufficient?
I'm suspecting that the mis-connected AC ground is a significant contributor to the 60Hz hum I hear in my DC-powered PC's sound system and the Sony marine
DC stereo system whenever the Magnum MS-2800 inverter/charger is in charging