Hello,
I have just fitted a Victron 7KW Isolation Transformer on my barge which has a metal hull. I tested for continuity between the two earths to test for the desired separation and got a reading of only 36.4 ohms (see photo attached). This seems to low.
Jumper cable on the output side is fitted to J5-J7 spade connectors, casing earth is then bonding to a busbar which is then bonded to the hull by the engine mounting point. I would have expected either a complete open circuit reading or a high ohms reading. Do I have a problem somewhere with an alternate path to shore earth? The boat is afloat but it is low to the river bed.
I’ve also attached a screenshot from following link where somebody mentions this and says it’s fine which confuses me further. So I’m unsure what tests and what readings I should be getting.
https://airlinktransformers.com/posts/boating-transformers-faq
Can anybody help me understand what is going on?
Thanks,
Joe.
