Reply to "Volt and Amp meters"

"...could I resistor it down to what ever voltage the meter works on?"

Resistors are not used to reduce voltage. They are used to reduce current.

I suggest that you use an isolated supply for the meters (and anything else that requires an isolated supply) per the manufacturer's suggestions. Small isolated supplies, either AC or DC, are easy to find (wall warts for example) or to make.

3/5/171:49 PM

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