230 V transfer switch?

[Dick Locke]

I'm looking for a 230v 50 amp double pole transfer switch so I can
switch my boat between 115v 30 amp and 230v 50 amp shore power. Any
ideas for a small one? There's a switch on the boat already that
switches between the 230v generator and 230v shore power but I can't
spot the manufacturer's name...

In case you're curious, I brought a Florida boat to SF bay where 230 v
marinas are scarce. It has a 230v ac refrigerator which I do need to
run at the dock and some aircons that I don't need here. My thought is
to put a 4kva 115>230 volt transformer on board, and remember not to
try to run aircons from the 115 shore power. The marina could rewire
for a fee but if I do it on board it costs about the same and I can
take it with me.

 

[Graham Stephen]

Warning: I am in Europe and have managed to cook various US sourced items
by subjecting them to
twice the voltage that they expected. It required no thought to achieve!
Pride damaged more that the pocket!

Graham

 

[Dick Locke]

Warning: I am in Europe and have managed to cook various US sourced items
by subjecting them to
twice the voltage that they expected. It required no thought to achieve!
Pride damaged more that the pocket!

Graham

I have that in mind, if not under control. The boat was originally
owned by a European living in Hong Kong and then Ireland, so it has
220 volt outlets and appliances throughout. The first American to own
it put in a small stepdown transformer and 115 v outlets and
unfortunately a 115 v Heart for battery charging.

Now, being a Tayana, I found additional American-style 115 outlets
buried in the cabnetry that are actually wired to 12v dc...go figure.

 

[Vito]

I have that in mind, if not under control. The boat was originally
owned by a European living in Hong Kong and then Ireland, so it has
220 volt outlets and appliances throughout. The first American to own
it put in a small stepdown transformer and 115 v outlets and
unfortunately a 115 v Heart for battery charging.

Now, being a Tayana, I found additional American-style 115 outlets
buried in the cabnetry that are actually wired to 12v dc...go figure.

It could be worse. I dunno about marinas but in U.S. RVs and many
campgrounds the "50 Amp" service is NOT really 220 volts, but simply two
110V circuits using 220V plugs and jacks to handle the current.
Typically one of these circuits runs the #2 air conditioner and the
other one the rest of the "house". Thus it doesnt matter if the shore
jack is really 220, or simply the same 110 in parallel, cuz the RV's two
110v-to-neutral circuits are not connected in any way except sharing a
common neutral lead. However, in your application ..???

If your boat really uses 220, vs two seperate 110v circuits, I'd verify
each shorepower jack before hooking up to it.

Meanwhile I'll watch for smoke on the horizon (c:

Howard