Guru
Joined: 11/02/2018
Location: AustraliaPosts: 3409
| Posted: 04:00am 12 Apr 2026 |
I have my doubts about the DC clamp meter reading. The high frequency ripple on the DC may be giving a false high reading.
The lost Watts don't just disappear, they get converted to heat. Check the temperature of everything between the battery and the inverter with a load of 2kW or more.
80% efficiency would mean 500W is being turned to heat (2.5kW in x 80% = 2kW out). That would make the cables, connectors, toroid or heatsinks too hot to touch, perhaps hot enough to melt the cable insulation.
If they are just warm then you are not loosing that much.