Solar panel measuring not accurate...
by
onHello!
Same problem that quite some people have here with measuring solar panels with a clamp.
An overview... maybe someone sees the logic:
- at night, there is a constant measuring of 50 Watt on the Solar circuit.
- if I switch off the fuse of the solar installation this drops to 25 Watt?
- during day, the reading is 50-100 Watt higher than the numbers shown on the inverter.
So I'm thinking to buy a phototransistor to stick to the red LED on my DIN kWh meter installed. Any pointers to a model that should work are welcome...