Measured at the UPS, which has 1W resolution. Confirmed its accuracy with an amp clamp on the circuit when running the UPS in pass-through mode. Efficiency is e

Measured at the UPS, which has 1W resolution. Confirmed its accuracy with an amp clamp on the circuit when running the UPS in pass-through mode. Efficiency is even worse most of the time since it’s a double-conversion (online) UPS that I normally run in full conversion mode - something like 80-85% efficiency overall, but because I fall back to generator power relatively frequently I just leave it there for convenience (in case I’m not home to switch it when the generator’s turned on).