Hmmm. I thought there was a problem with this.
"In a DC circuit, the power consumed is simply the product of the DC voltage times the DC current, given in watts. However, for AC circuits with reactance we have to calculate the power consumed differently."
The example given finds 240v x 5 amps = 205 ish watts so there is a BIG difference.
Phew, it's a long time since I did this stuff and I still prefer DC.
The one with the MRGC in the pocket.