Re: Powerwise charger problem
Try bypassing the ammeter by connecting the two leads together and see what happens.
Generally, the chassis is grounded to the house mains. I would assume the DC circuit would be isolated from this.
As an alternative, you could remove the ammeter and keep it from touching the chassis.
Just glancing at the schematic in the manual JohnnyB provided, I don't see that it's supposed to be grounded.
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