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Post by ianali on Feb 16, 2020 17:28:34 GMT
Before we left our marina a few days ago we were plugged in to shore power. During the evening the power went off. I checked the shore bollard and it had tripped. Flicked it back on, no power still. Our boat has front and rear plug ins. Checked on board and the fuse at the front of boat had tripped, reset it and all was well. Spoke with neighbour next day and he told me he had lost power overnight but his bollard hadn’t tripped, neither had his boat. Why did mine trip but not his? Anyone any idea.
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Post by Gone on Feb 16, 2020 17:35:52 GMT
Before we left our marina a few days ago we were plugged in to shore power. During the evening the power went off. I checked the shore bollard and it had tripped. Flicked it back on, no power still. Our boat has front and rear plug ins. Checked on board and the fuse at the front of boat had tripped, reset it and all was well. Spoke with neighbour next day and he told me he had lost power overnight but his bollard hadn’t tripped, neither had his boat. Why did mine trip but not his? Anyone any idea. By "fuse at the front of the boat" do you mean the overcurrent circuit breaker or the RCD trip? Assuming you mean RCD trip then it will have tripped because of a problem on your boat. As it takes a few milliseconds for the trip to operate the shore side RCD will also have experienced the fault current, so not surprising both tripped. Reason for tripping is usually because something is faulty, though if there were any thunderstorms near by that can cause tripping.
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Post by Jim on Feb 16, 2020 18:18:27 GMT
Had similar trouble at Skylight Circus Arts last week, Hall sockets kept tripping, reset, 5 mins later trip again. An outside security light had been ripped off the storage container, wires left dangling, although the live was no longer live, the neutral and earth were earthing, causing the rcd to trip.
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Post by Mr Stabby on Feb 16, 2020 18:20:49 GMT
Often rcds trip for no real reason, a bit like smoke detectors go off if you make a bacon sandwich.
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Post by Deleted on Feb 16, 2020 18:24:24 GMT
When I make a bacon sandwich, or indeed just about anything, the activation of the smoke alarm is entirely understandable. Well done is my forte Rog
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Post by Mr Stabby on Feb 16, 2020 18:30:14 GMT
Yes, but there's a reason why it isn't called a "crispy bacon sandwich detector".
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Post by JohnV on Feb 16, 2020 18:42:07 GMT
some makes of RCD are sensitive to spikes on the line, occasionally they can trip because of a fault nearby on a different circuit. It is also not unknown for there to have been a temporary earth fault caused by an insect committing Hari Kari in a junction box. If it repeats then there is a fault but good luck with the fault finding, intermittent earth faults have been known to drive electricians to drink cheers
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Post by Mr Stabby on Feb 16, 2020 18:51:28 GMT
It is also not unknown for there to have been a temporary earth fault caused by an insect committing Hari Kari in a junction box. Apparently that's why glitches in electronic systems are called "bugs", in the days of electro-mechanical telephone systems, breakdowns would often be caused by actual insect bugs shorting out the relays. PS. There aren't any telephones in China.
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Post by Deleted on Feb 16, 2020 18:58:46 GMT
The early ones were in Bakelite.
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Post by JohnV on Feb 16, 2020 19:03:08 GMT
weren't any ceramic ?
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Post by quaysider on Feb 16, 2020 19:22:38 GMT
could it not be that that "supply" (like here ) isn't the Proper 16amp but a cut down version of only 10amp.. which means if I boil the 2kw kettle (when the 1kw immersion is on) it "trips" my supply?
I'm more careful now..... as it's NOT just me if buggers up but half a dozen other boats that are oblivious to it!
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Post by ianali on Feb 16, 2020 19:49:03 GMT
could it not be that that "supply" (like here ) isn't the Proper 16amp but a cut down version of only 10amp.. which means if I boil the 2kw kettle (when the 1kw immersion is on) it "trips" my supply? I'm more careful now..... as it's NOT just me if buggers up but half a dozen other boats that are oblivious to it! Hello. We have moored in this marina over winter, not had a problem before. All was well after I reset. Nothing was switched on of any significant wattage. As I said other boats also had a supply problem that night. I’m hoping that something on the supply side happened that caused both my bollard and boat RCD to trip.
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Post by Trina on Feb 16, 2020 19:51:01 GMT
Power surge ?
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Post by ianali on Feb 16, 2020 19:55:33 GMT
That kind of thing I hope. I was really asking if such things can cause RCDs to trip, rather than it having to be a boat fault. Had worse problem this evening involving non risen Yorkshire puddings. Devastated.
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Post by quaysider on Feb 16, 2020 20:43:31 GMT
mine usually rise... back up plan, sildanfel ;-) ... although I'm not TOTALLY sure how that would work in YP... lol
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