I have been following the discussion about running the washing
machine and watermaker at the same time, with some owners reporting
overloading the genset.
A few years ago, I had Amel (in Hyeres) install an AC voltmeter and
ammeter so that I could monitor AC voltage and loads. This was
mostly related to low amperage typically available dockside in
Europe, and I wanted to know which appliances I could run without
tripping the circuit breakers dockside.
Since then, I have found these instruments to be among the most
useful on board. They tell me when I am close to overloading the
genset or shore power, and most importantly, tell me when an
appliance is consuming too much (or too little) power. It also is a
good check on shore power voltage. It's a useful diagnostic tool. In
the case of the 220V watermaker, it would warn of impending pump
Since I didn't do the installation myself, I can't provide How-to
help, except to say that the meters were mounted inside the
compartment over the galley sink, where the steering cables are
visible. I'm sure any good electrician (and many owners) could
I would highly recommend these meters.
BTW, the washing machine uses electricity mostly to heat water, not
to spin, so running at a cooler wash temperature reduces load.
PS I am still waiting to hear from the SM owner in Europe who told
me about the salinity sensor on the watermaker being disconnected on
installation... I will post any information received.