I am measuring the live voltages right now and am seeing these numbers. I thought 338 volts DC was the result of rectifying 240 volt AC?
I understand that 120 volts AC is the Vrms reading and that the Vpeak reaches up to 170 volts. I just don't understand how I'm getting 338 volts from 120.
The number ~338 comes from the peak voltage of a 240 volt RMS:
\$240\sqrt2 = 339V\$
The voltage read between the two center pins is 120. The DC voltage read from the outer pins on my DMM says 338. This seems impossible? Could it be my meter is faulty? It has always been decently accurate for everything else and I've had it for over a decade.