Shore power question

Nigelpickin

Nigelpickin

Well-Known Member
Joined
12 Apr 2011
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Location
Falmouth
www.cornishcottageholidays.co.uk
My 32 amp line in has just gone. No fuses tripped but reverse polarity light has come on and the socket that attaches to the boat is plate warmer hot.

No rain or water ingress at either end....looks like it's not the boat just that for some reason the cable has fried....anyone know why this would happen or what would cause this to happen.

Thanks in advance :)
 
Sounds like poor conection ,or you may be overloading or you have created a coil by wrapping around the post is this what u normally do
 
Nigelpickin said:
Thanks

So a new cable and sockets I guess, I will disassemble tomorrow and see if there are any signs of damage.

Hopefully it's an external issue that has not affected the RCD...

Thanks for the feedback.
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You might get away with just cutting back the cable a bit, and cleaning up the socket, eg the conductors might be a bit green and brittle (or hot, black and melted if it's all gone a bit wrong). I wonder if your neutral is leaking to earth perhaps.
 
Anders_P42 said:
+1 I made this mistake a couple of weeks ago. At least I know trips work onboard :)
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Tee-hee, we've all done something like that. I nailed a loose floorboard to the cold water main once. Happy days. (It was quite under control, drip drip drip, until I pulled the board and nail back out to see what I'd done...whoosh!) :D
 
jimmy_the_builder said:
Tee-hee, we've all done something like that. I nailed a loose floorboard to the cold water main once. Happy days. (It was quite under control, drip drip drip, until I pulled the board and nail back out to see what I'd done...whoosh!) :D
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Roger that Jimmy, would the hot end be the likely offender or could the problem be anywhere?
 
Nigelpickin said:
Roger that Jimmy, would the hot end be the likely offender or could the problem be anywhere?
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I'd certainly start with the hot end, because you definitely know there's something wrong there. I think you're going to find an obvious defect when you pull it all apart. Is it Marinco or something else?
 
jimmy_the_builder said:
I'd certainly start with the hot end, because you definitely know there's something wrong there. I think you're going to find an obvious defect when you pull it all apart. Is it Marinco or something else?
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Jimmy I'm a bit of a dullard when it comes to electrics, it's a big yellow head with three outer pins and a spike...differs to the cable that I bring the 16 amp through.

I have the spike headed one supplying aircon, hob and hot water and a regular one , ie no spike just the three male pins supplying the 240 v ring main and other bits and bobs.

It's the spike head that plugs into the boat that's hot, I shall pull apart tomorrow and investigate. By chance I have an Ancasta engineer on board tomorrow so luck might be on my side.
 
Nigelpickin said:
Jimmy I'm a bit of a dullard when it comes to electrics, it's a big yellow head with three outer pins and a spike...differs to the cable that I bring the 16 amp through.

I have the spike headed one supplying aircon, hob and hot water and a regular one , ie no spike just the three male pins supplying the 240 v ring main and other bits and bobs.

It's the spike head that plugs into the boat that's hot, I shall pull apart tomorrow and investigate. By chance I have an Ancasta engineer on board tomorrow so luck might be on my side.
Click to expand...

Like this maybe?

listing-2277-1-1-280-198
 
I would guess that you have bare wires twisted in and then nipped up with a grub screw.
I would recommend buying a set of bootlace ferrule crimps, and fitting those. Its more of an industrial practice, but its also very good practice... For any bare wire terminations really....
 
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