single
Well-Known Member
My shorepower keeps tripping the stantion on the pontoon.Its all quite old so i'm going to rewire it but what is the need to put the earth to the engine block?
Shorepower
- Thread starter single
- Start date
VicS
Well-Known Member
I assume a GRP hull.
The old ( 2000 ??) edition of ISO 13297 ( the applicable standard ) required the shorepower earth to be bonded to the DC negative except that it need not be if there is a whole craft RCD
http://www.earlhill.de/files/ISO_13...Systems_Alternating_current_installations.pdf
The exception is, contrary to current expert opinion, and other standards. European, I believe, and certainly the ABYC.
There is a new edition of Iso 13297. I do not know what it says but I was lead to believe that the above exception would almost ceratinly be not part of it.
Your choice, I feel. If not bonded ensure you have an RCD in the incoming supply.
If bonded you will need a galvanic isolator unless you never leave the shorepower connected for long periods . Thats connected in use or not.
You are sure its not just your lead causing the problem?
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VicMallows
Well-Known Member
I think the most important point is to first establish WHY the shore power is tripping (I assume an RCD, rather than an overload?). Whether the mains earth is connected to the boat (engine) earth seems irrelevant at this stage. When you are connected to shore power, something on the boat must be leaking a little bit of current where it should not go.
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single
Well-Known Member
Well? Its a brand new good lead. I guess the wiring is 20 odd years old and sockets are in daft places so just as easy to get a garage c/u,shorepower input plug etc and redo it.When it was tripping it was after a few minutes using various different sanders.
VicS
Well-Known Member
Fairy nuff on the lead.
A garage consumer unit is a popular inexpensive choice...... I think you will find you also need a double pole circuit breaker between the inlet receptacle and the CU.
The garage CU may well not comply with the new edition of Iso 13297 ... I dont know. I have not read it.
