Any decent meter will have a high input impedance on the Volts setting otherwise it would provide an inaccurate reading. 

Our customer, who first reported this, is an engineer with a well-known charge controller/inverter company. He used a cheap meter whereas I used a Fluke 87-5. Both had the same readings. 


Rick Brown
Solshine Energy 
Solar Electric Contracting Services 
www.solshineenergy.com
Roanoke, VA
Office: 540.235.3095
Mobile: 540.808.9502

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On Oct 28, 2024, at 12:45 PM, Darryl Thayer via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:


My first thought is what meter are you using?  Some meter will have high input impedance and give false value

On Tue, Oct 15, 2024 at 1:09 PM rick--- via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:
Back on the Sol-Ark topic again. We have a customer whose 12kW is measuring -195VDC to ground from L1 and L2 with the Gen breaker open. L1 to L2 = 0V. I know the Gen input can be configured as an output, but reading a high DC voltage to ground is concerning. The generator has never been run. System is operating normally. 

Anyone have a Sol-Ark accessible that could verify what they’re reading?

Thanks in advance. 

Rick Brown
Solshine Energy 
Solar Electric Contracting Services 
Roanoke, VA
Office: 540.235.3095
Mobile: 540.808.9502

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