Amp Draw
How many amps should a motor home draw when plugged in with nothing turned on?
Forum Discussion
I just checked on my motorhome.
AC power: 25W, about 0.3A (power factor isn't great, I guess).
DC house load: 0.2A (mostly for the propane detector)
My DC ammeter measures battery current, so I had to turn off the AC power to measure the house load. With AC and the converter on, the average battery current once the battery is fully charged is very close to zero; the house load is just being supplied by the converter, and the battery is sitting at the float voltage. Naturally, if the battery is not fully charged, the converter charging the battery imposes a noticeable additional AC load (and, of course, makes for a non-negligible battery current as well).
AC power: 25W, about 0.3A (power factor isn't great, I guess).
DC house load: 0.2A (mostly for the propane detector)
My DC ammeter measures battery current, so I had to turn off the AC power to measure the house load. With AC and the converter on, the average battery current once the battery is fully charged is very close to zero; the house load is just being supplied by the converter, and the battery is sitting at the float voltage. Naturally, if the battery is not fully charged, the converter charging the battery imposes a noticeable additional AC load (and, of course, makes for a non-negligible battery current as well).
