My profile shows a 45' Asphalt Cruiser, but please don't shout me off just yet. We have many things in common with boats and since we are now in Europe
with this thing for a tour (
) we need some urgent advice from the international yachting set.
We are 50-amp, two 120vac lines sharing a common neutral.
Leg "A" (non-inverter) runs air-con1, air-con2, aqua hot electrical element, electric cooktop, washer dryer, and a base floor heater.
Leg "B" (inverter) runs lights, plugs, Headhunter Mach5 water pump, 2x TV, entertainment gear, microwave and residential fridge.
Leg "B" (non-inverter) runs air-con3
Our Automatic Transfer Switch connects a 12K genny and the ShorePower. Hot1, Neut., Hot2 (x2). There is a generator
relay circuit board and neutral de-energize relay also in there. Output runs to the distribution circuit breaker panel (load centre), which also shows polarity on the main breaker, with individual breakers for each appliance. There are connections to our Trace 3000w inverter/converter and onboard charger
. I think all pretty normal, but no EMS.
We installed a separate Mastervolt 100/12 (90v~260vac) 3-stage charger
, with shunt, that we plug
in separately in low amperage situations so we can run off the Trace 3000w inverter
. No aircon, no heavy appliances
unless by genny. We also have 600w of solar panels
and an MPPT
controller to the Mastervolt shunt. This is our living situation presently.
Desired Technology Additions
We wish to order the Victron Autotransformer 32, which accepts European 240vac, max 32-amp, on input and outputs to two separate legs at 120vac, sharing a common neutral generated by the Autotransformer.
Before the unit, on the shorepower side, we will purchase
a Mastervolt soft-start. We would also like to place before the Victron32 a PowerMaster or Hughes
AutoTransformer to boost low voltage, but cannot find a European version and do not want to purchase
two of these aft of the Victron32. These "dedicated" boost devices seem uncommon in Europe
The Victron32 should make European shore "look" like incoming four-wire (one is ground), 50-amp US, except at 50Hz. Is that right? We initially purchased a 16-amp Victron Isolation Transformer with stepdown, but this only has one leg output and we would have to jumper Leg "A" and "B" aft of the transformer, in a separately installed curcuit breaker and be content with a max 16-amp 240vac input, which may bring us power consumption
problems in summer or winter if a 32-amp connection can be found.
Without going to something like the Mastervolt MultiTap, is the Victron32 with a Mastervolt soft-start prior the right working technology. We like the 32 since we "may just find" a 32-amp incoming 220 somewhere on our tour. Just maybe, and want to be prepared. I am also not understanding what Victron says about balancing loads between the neutral and how that will affect my two legs.
Victron 32A datasheet
Thanks for your consideration and recommendations or advice.