I got a p5 (running on the latest firmware) and recently I’ve decided to use a multimeter and check the values straight from a power cable running out from the p5.
My P5 is set to 119 V Multiwave, mw strenght 3, phase tune 7, low distortion. It is plugged to an AC outlet at 120.7 V, measured between the Hot & Neutral pins. Readings from Hot & Ground and Neutral & Ground are both 0 V.
The P5 display states incoming voltage of 122 V, 1.9% THD and Voltage out of 119.4 V, 0.1 % THD, 60 Hz.
Readings from the multimeter straight at a power cable termination gives me 120.0 V when measured between the Hot & Neutral, 56.1 V between the Hot & Ground and 34.7 V between the Neutral & Ground.
I have used two multimeters and checked at least one outlet from each bank at the P5.
So, does anyone have any idea why this is happening?