It will probably draw closer to 7.5 A at the wall (still only half the 15 amps of a normal circuit). It's has some serious heat losses, etc., inside, as any power supply will (that is what fans, etc, are always for . . .) Mine draws about 25% more power than the power delivered to the track. I've never had it up over 600W but when I tested it up to right at 500 W it was drawing a bit over 5 amps from the wall socket. I was actually suprised the losses weren't more.
Thanks Lee, good to know the actual figures from someone that has one and has checked it out. I don't have one (sure would like one though), was just doing a rough conversion of the rated power of the ZW-L. Hadn't thought of the cooling fans or other added power consumption for the internals. I think the 620 watts was actually closer to 34 amps, but I was thinking Lionel had stated 36 amps, could be off a little there too?
