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Re: DC power supply grounding

 

Appreciate everyone's thoughts.

On the diagram I posted, that emergency switch has traditional spade connectors. So one easy fix is to just swap the white and black connectors, putting the fuse on the hot leg. That puts the potentiometer switch on the neutral, which I guess isn't all that big a deal.

However, I plan on keeping the orientation of the two wires to the emergency switch and moving the fuse (breaker) to the hot side anyhow as it just makes more sense to me. Will revise the diagram for my needs going forward and stick a copy in the control box so I can't loose it.

On Monday, January 1st, 2024 at 8:53 AM, Don Burns <donaldgburns@...> wrote:




Breaking the high side line and not the neutral was painfully demonstrated to me years ago. My M-in-L needed me to drill a hole and handed me her ancient Sears 1/4" all metal drill. When I let go of the power switch I got 115 VAC to the hand. She that happened often. It had the old two wire cord without a polarity plug. 50-50 chance the neutral was being switched and a huge buildup of copper/grease inside the case caused a low resistance to the case. When plugged in and used it was possible to energize the case. Didn't take me long to put a new three wire card on that beast. I would have tossed it but she was frugal to a fault.
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