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I’m trying to find out if the 7,000 watt 230v to 230v isolation transformer will take 120v/240v split phase (120v to ground, 240v leg to leg) and output 230v to ground. We have a European powered boat that is wired for 230v to ground and the breakers for the 230v panel are only single breakers, as the neutrals are to a common buss. We want to use incoming US power but not be concerned that we have not protected the wires on both legs. Our equipment does run fine on either 50hz or 60hz.
If the transformer is a proper isolating transformer then test the 230V output IS isolated from ground before connecting. If this is so, then having single pole breakers on the 230V side is no issue. However, if the transformer casing is metallic and connected to shore ground, it should be isolated from any fitting inside the yacht, and covered from touch - as it will be at shore ground potential. Do make sure that the shore supply is protected by an RCCD.
The datasheet says the 7000VA transformer is only to transform 230V to 230V.
https://www.victronenergy.com/upload/documents/Datasheet-Isolation-Transformers-EN.pdf
The other models can also transform 120V to 230V.
