Sterling battery charger

pessimist

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Sorry yet another thread asking a question. I have a Sterling 1230ced battery charger which I replaced with a more powerful model. Foolishly I did not remove the (ridiculously expensive) mains fuse holder and fuse with the charger. This fuse was in the negative line on the mains supply. I'd like to use the charger in the garage now. If powered by a standard domestic supply do I need the fuse? What purpose does it serve?
 
Not sure I follow this. Why would you put a fuse in the neutral of the mains supply to the charger? The boat's mains supply should already be fused. You can connect the charger to your garage domestic supply, which should already have a breaker to safeguard the mains cable. Suggest you just fit a 13A plug on the charger lead and pop a 5A fuse in it.
 
No, the user manual shows a fuse in the negative battery lead, not the mains supply.
Presumably that protects the charger output if the positive battery connections are fused close to the batteries ?
 
Presumably that protects the charger output if the positive battery connections are fused close to the batteries ?

The manual also suggests fusing the 3 positive charger outputs. I think Mr Sterling perhaps saw a market opportunity for selling his fuses.
 
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