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Post by Deleted on Dec 1, 2016 9:45:55 GMT
I expect most professional fitouts should be reasonably good, though access for plumbing bits may be restricted. With DIY fitouts or later additions the quality may vary greatly. With wiring a tidy job leaves a good first impression, though I'd look closer to check that larger crimp connections are fully heatshinked and the smaller crimp connections look like they've been done with a proper ratcheting tool. As always get a full survey from a reputable surveyor. BTW something that ticks me off is where 12V and 0V batt cables are cable tied together before the isolator or main fuse: If the batt terminals get shorted eg due to dropped hatches or tools, once the insulation melts it's armageddon time, you haven't got a prayer of safely stopping it. Hopefully this is something a good surveyor should spot, cheap to fix but a potential disaster if left as is. Apart from the -ve battery links resting on top it looks to me as if only the +ve are bundled in that picture. Something else is that there are at least 2 take off points along the domestic batteries and the isolator is in the -ve......
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Post by JohnV on Dec 1, 2016 10:12:56 GMT
Well pointed out, Pete. I know others have said the same but I've only just seen this post. It's not something I'd ever considered but now that you mention it it's so obviously a danger point. Cheers, Tony Shit!!! ....... I've just used a lump of 3 core 25sqmm H07 RNF flex from my batteries to the 125A fuses ( 24V-12V- 0) ....... That was something I hadn't thought of as a safety issue. Bugger ..... only finished yesterday ..... I'll have to change it this weekend Didn't wait for the weekend, did it this morning. Fuseholders on wooden panels screwed to battery room bulkhead each about 9" from take off points on bank, that way cable didn't have to be disturbed and only 12" fly leads made up for links from battery terminals to fuse holders. Where the Fuse holder were, on the low voltage distribution board, I replaced them with 200Amp RDL junction Blocks so I didn't have to change any cabling at that end of the three core. (Incidentally Pete I don't sleeve my crimp joints, I prefer to see if there is any corrosion rather than have it hiding behind a bit of plastic)
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Post by bargemast on Dec 1, 2016 13:07:46 GMT
Shit!!! ....... I've just used a lump of 3 core 25sqmm H07 RNF flex from my batteries to the 125A fuses ( 24V-12V- 0) ....... That was something I hadn't thought of as a safety issue. Bugger ..... only finished yesterday ..... I'll have to change it this weekend Didn't wait for the weekend, did it this morning. Fuseholders on wooden panels screwed to battery room bulkhead each about 9" from take off points on bank, that way cable didn't have to be disturbed and only 12" fly leads made up for links from battery terminals to fuse holders. Where the Fuse holder were, on the low voltage distribution board, I replaced them with 200Amp RDL junction Blocks so I didn't have to change any cabling at that end of the three core. (Incidentally Pete I don't sleeve my crimp joints, I prefer to see if there is any corrosion rather than have it hiding behind a bit of plastic)That's very good of you John, I'm proud of you, myself I've about a hundred jobs that I was going to do at the w.e. some 6 months ago, they're all still waiting for another w.e. or just a day of the week.
Not sleeving your crimp joints to keep the possibililty of checking them for corrosion sounds like a good solution too, aslong as you do check regulary.
Peter.
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Post by smileypete on Dec 2, 2016 12:29:56 GMT
(Incidentally Pete I don't sleeve my crimp joints, I prefer to see if there is any corrosion rather than have it hiding behind a bit of plastic) Still sounds like a shortcut to me. If you really want to inspect them, there is transparent glue lined heatshrink available: www.ebay.co.uk/itm/like/232148313885I've seen small crimp terminals on plain stranded copper wire go high resistance when exposed to water, but the same on wire with tin plated copper strands (aka 'marine grade') remains OK. So my ideal would be to use wire with tin plated copper strands, or keep the crimp termination bone dry by encapsulation with glue lined heatshrink, or even better do both where possible. It's like people obsess over making batt leads perfectly 'balanced', but probably risk undoing it all plus more by having terminals that are vulnerable to corrosion.
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Post by JohnV on Dec 2, 2016 12:57:36 GMT
(Incidentally Pete I don't sleeve my crimp joints, I prefer to see if there is any corrosion rather than have it hiding behind a bit of plastic) Still sounds like a shortcut to me. If you really want to inspect them, there is transparent glue lined heatshrink available: www.ebay.co.uk/itm/like/232148313885I've seen small crimp terminals on plain stranded copper wire go high resistance when exposed to water, but the same on wire with tin plated copper strands (aka 'marine grade') remains OK. So my ideal would be to use wire with tin plated copper strands, or keep the crimp termination bone dry by encapsulation with glue lined heatshrink, or even better do both where possible. It's like people obsess over making batt leads perfectly 'balanced', but probably risk undoing it all plus more by having terminals that are vulnerable to corrosion. I think as well Pete, My batteries are in their own little room off the main engine room complete with its own vent to deck, the 24 volt panel and modules are on a wooden board at eye level in a large well lit, ventilated and dry engine room. If my terminals ever get damp I shall be most Pee'd off !!! I do see where you are coming from, and to be honest I normally do follow BSS guidelines although they don't apply to my boat. I have found , like you many cases of insulated crimps that were high resistance and copper tube crimps (usually put on with a hammer) the same
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Post by smileypete on Dec 2, 2016 13:31:43 GMT
I think as well Pete, My batteries are in their own little room off the main engine room complete with its own vent to deck, the 24 volt panel and modules are on a wooden board at eye level in a large well lit, ventilated and dry engine room. If my terminals ever get damp I shall be most Pee'd off !!! What batts are they out of interest? Might be OK if they're fully sealed, but what if that changes? - though I guess some of the cables might need altering at that point.
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Post by JohnV on Dec 2, 2016 15:16:12 GMT
I think as well Pete, My batteries are in their own little room off the main engine room complete with its own vent to deck, the 24 volt panel and modules are on a wooden board at eye level in a large well lit, ventilated and dry engine room. If my terminals ever get damp I shall be most Pee'd off !!! What batts are they out of interest? Might be OK if they're fully sealed, but what if that changes? - though I guess some of the cables might need altering at that point. sorry the delay getting back, just been on an emergency call out to a neighbour who has come back to his boat after two weeks away to find Port engine/domestic bank totally flat and starboard engine bank with 6v ........ battery charger (Vetus 26A) not doing anything ...... He was in a panic so had to go and do a quick bodge repair for him. Thought the charger might just be refusing to see batteries that flat but wouldn't charge. a 2/3rds charged one that I took over (Inside it has a green flashing led but what that means, without a manual I 'ain't got a clue. Any way have got him up and running with a couple of old idiot battery chargers of mine feeding his batteries .....Lord alone knows if they will come back at all and if they do how good they will be My batteries are Varta LD140's .... the battery locker is a little room about 6' headroom and about 4' x 3'6" with central heating feed pipes running through which keeps it at quite a reasonable temp
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Post by smileypete on Dec 2, 2016 16:53:18 GMT
sorry the delay getting back, just been on an emergency call out to a neighbour who has come back to his boat after two weeks away to find Port engine/domestic bank totally flat and starboard engine bank with 6v ........ battery charger (Vetus 26A) not doing anything ...... He was in a panic so had to go and do a quick bodge repair for him. Thought the charger might just be refusing to see batteries that flat but wouldn't charge. a 2/3rds charged one that I took over (Inside it has a green flashing led but what that means, without a manual I 'ain't got a clue. Any way have got him up and running with a couple of old idiot battery chargers of mine feeding his batteries .....Lord alone knows if they will come back at all and if they do how good they will be. Yeah people are never in a hurry to help themselves when things are going right, but always in a hurry for you to help them when things are going wrong. Does neighbour have and make use of an ammeter and voltmeter?
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Post by JohnV on Dec 2, 2016 16:57:45 GMT
sorry the delay getting back, just been on an emergency call out to a neighbour who has come back to his boat after two weeks away to find Port engine/domestic bank totally flat and starboard engine bank with 6v ........ battery charger (Vetus 26A) not doing anything ...... He was in a panic so had to go and do a quick bodge repair for him. Thought the charger might just be refusing to see batteries that flat but wouldn't charge. a 2/3rds charged one that I took over (Inside it has a green flashing led but what that means, without a manual I 'ain't got a clue. Any way have got him up and running with a couple of old idiot battery chargers of mine feeding his batteries .....Lord alone knows if they will come back at all and if they do how good they will be. Yeah people are never in a hurry to help themselves when things are going right, but always in a hurry for you to help them when things are going wrong. Does neighbour have and make use of an ammeter and voltmeter? You jest !!! I don't think there is anyone in this boatyard would know one if it came up and bit them. I've totally given up trying to educate them about batteries, as far as everyone down here is concerned they are a consumable item and you always buy the cheapest possible.
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Post by JohnV on Dec 2, 2016 17:00:58 GMT
Actually, buying the cheapest car batteries going is probably the best for them ...... Wasn't it you that said "you can destroy a good set just as quickly as a cheap set"
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Post by smileypete on Dec 2, 2016 17:26:58 GMT
Actually, buying the cheapest car batteries going is probably the best for them ...... Wasn't it you that said "you can destroy a good set just as quickly as a cheap set" Not really, but if people can't/won't take interest, best let them buy whatever el cheapos they choose, performance will largely be dictated by lack of care. But aren't you retired? Why not treat your retirement time like a proper job and just restrict help to the weekends? Unless they're paying you well of course.
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Post by JohnV on Dec 2, 2016 17:44:03 GMT
Actually, buying the cheapest car batteries going is probably the best for them ...... Wasn't it you that said "you can destroy a good set just as quickly as a cheap set" Not really, but if people can't/won't take interest, best let them buy whatever el cheapos they choose, performance will largely be dictated by lack of care. But aren't you retired? Why not treat your retirement time like a proper job and just restrict help to the weekends? Unless they're paying you well of course. Not paying me well, but while reading your post there was a knock on the door, it was the neighbour with a bottle of malt as a thank you Today has been a hard day for me, was up at Tilbury docks trying to sort out a weird electrical fault on a Tug, The engine room has been butchered so many times that trying to work out what does what is not easy (Originally built in the 1940's and rebuilt about three times with Lord knows how many different engines/generators etc over the years getting tattier with each "overhaul" Eventually got it all working again (A cooked double pole isolator gone highish resistance on the negative feed which meant all the engine metering was jumping all over the place. Why oh Why do people use ordinary AC fuseboards with AC main isolators on DC circuits !!! Didn't get back to the boat until about 3 and had just started cooking some lunch when the knock on the door came !!!
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Post by Deleted on Dec 2, 2016 18:30:44 GMT
I am beyond useless with electrickery. But I can certainly help you with the malt Rog
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Post by lollygagger on Dec 2, 2016 19:00:08 GMT
I say good for you John, it's nice to be retired and help for it's own sake. Gives you a glow doesn't it. I predict it makes you live longer too.
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