Quote:
Originally Posted by brycen66
You could get around this by using a differential op amp setup on a length of wire attached to your main ground wire, but that adds unnecessary resistance.
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You don't need to add unnecessary resistance. Just measure the voltage drop across the existing ground wire:
Quote:
Originally Posted by Ether
Instead of measuring the voltage drop across the main breaker, you could measure the voltage drop across a length of wire.
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Or use an isolation amplifier. I'm sure a EE could figure it out.
I like your Hall Effect solution too.
[EDIT] By the way, your link is broken: it has a trailing ")"