Tongs Current Puzzle

Author	Message
Dinosaur Guru Joined: 12/08/2011 Location: Australia Posts: 357	Posted: 07:06am 07 Jul 2025       Hi All   Quote   If you have the panels connected to a switch-mode MMPT or charge controller the high frequency may be affecting the accuracy of the meter. My BMS is a Rpi switching SSR's, so the only time the SSR switches is when target Voltage is achieved. I would think the error would be the same on both leads. The tongs actually show the Red lead as Negative current and the Black lead as positive current. Either way whatever comes out of one, MUST go back through the other. So perhaps the accuracy of measurement differs from one direction to the other.