Originally Posted by N4712
Thinking about it now, i don't think its a super big job. Just Switch out the receptacles. Reprogram the Atlas. New inveter chargers. Wirirng size shoudl nto be a problem because i don't thing they change the wire size between 60&50Hz boats. HVAC depends, some of Cruisairs are both 60&50Hz compatible while others aren't. Then there are things like the watermaker. Not fond of Village Marine water makers anyways. Also ER blowers might have to be changed but thats not a big job either. Im not super sure about the appliances though.
Serious warning flags here. Think again. Or better still get advice from a qualified marine electrician and a good Surveyor.
I turned a 120V / 60 Hz boat into a 230V / 50 Hz boat. Well, mostly. And with expert help. Wiring gauge is likely to be an issue going the other way around, particularly to meet relevant Standards which is likely required for insurance.
First make an inventory of AC only appliances. I know Twisted chose to run lots of AC items when he built and hence his extensive listing in his post, but most folks have DC units where feasible and the AC stuff is quite limited in number. If that's the case then it may not be too difficult to workaround.
My workaround included adding some new receptacles and changing just a couple for the 230V /50 Hz circuits, which were also on a new, additional breaker panel. In some cases that will mean ending up with 120V and 230V receptacles next to each other, such as for the washer and dryer. I'm still running those 120V units here is Oz at the moment via a step down transformer but will be replacing them with 230V units soon. The washer works OK on 50Hz but if ambient temps are hot then the dryer overheats and shuts off part way through a drying cycle. I do not want to continue running inductive loads designed for 60Hz on 50 Hz long term. I believe it is a fire risk. On the other hand and as noted above, resistive loads are not really a problem, so I'm fine with my 120V toaster.
Its an item by item assessment once you have a full inventory of AC items. But I think its easier to go the direction I did. Most 230V / 50 Hz minor electrical items I buy come with wall-warts that accept wide voltage and frequency inputs. On the other hand, buying similar stuff in Nth America I found that often the wart would accept 120v/60Hz only.