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Old 06-03-2022, 12:43 PM   #20
twistedtree
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When an isolation transformer is used, it’s fine to have a single, centralized, common bonding point between neutral and ground. This works and is allowed because the secondary of the isolation transformer IS the source of power on the bot for shore power, so all the possible power sources are on board and can be bonded in once single location. It’s typically done at the main electric panel. The actual shore cord terminates at the isolation transformer, and its ground is connected to an internal shield in the transformer that is isolated from the secondary ground for the xformer. Note that is assumes you bought marine isolation transformers that actually have the separate shield. A generic transformer probably does not.
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