Because the power reading on my new P3 seemed lower than expected I connected a power (active watts) meter ( +/- 3%) between the P3 and the wall socket. This read 125 watts ( not VA which was of course higher at 180). Using only the regenerated outputs, the indication on the P3 dispaly was 77 watts. We are working at 230 volts here in the UK but that should be irrrelevant to this reading.
Is this difference due to the power consumed by the P3 itself or very large errors in the displayed reading