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Post by Deleted on Feb 25, 2020 19:00:54 GMT
Maybe it was done by someone with no electrical skills or experience being 'talked through what to do' on the phone. What could possibly go wrong In my job, if there's something wrong and I have to have the electrics cupboard open on the bus, the mechanics in either Kokkola or Alavieska can tell me what to look for and what to press or what to do. WhatsApp is handy for sending photos and you can draw on these photos with writing such as "It's this yellow light here" and arrows pointing. How's that help with rewiring battery terminals on your boat in Wiltshire ? Rog
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Post by Deleted on Feb 25, 2020 19:09:16 GMT
The two short links on the starter battery cables [the ones you've been told to get rid of] could originally have been for 2 x 6 volt starter batteries wired in series instead of the single 12 volt battery you've got now, or two much smaller 12 volt batteries in parallel. It looks like the steel frame is the correct size for that particular battery block (643 is in the sticker). Why do you think it's not just a case of battery terminals being on the other side on the previous battery? I'm not sure but I don't think there are any batteries which are exactly half the size of the case in the picture. ETA its quite interesting the way a bit of brass tube has been wedged into the tapered clamp and a bolt captured in it in order to attach the wire going back to the battery terminal. I would agree with the two battery theory but I don't see where it would go unless a part of the steel securing frame had been cut off. ETA if the terminals were other side this would also remove the problem of the positive terminal being too close to hull steelwork Those short heavy duty cables going back to the battery terminals are something which the person doing the job happened to have in their bucket of parts and had no other use for as they are so short.
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Post by naughtyfox on Feb 25, 2020 19:14:04 GMT
In my job, if there's something wrong and I have to have the electrics cupboard open on the bus, the mechanics in either Kokkola or Alavieska can tell me what to look for and what to press or what to do. WhatsApp is handy for sending photos and you can draw on these photos with writing such as "It's this yellow light here" and arrows pointing. How's that help with rewiring battery terminals on your boat in Wiltshire ? It is West Berkshire
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Post by JohnV on Feb 25, 2020 19:14:12 GMT
wired like that Ross it has the potential to cause problems (apart from anything else, the more connections in a circuit the more there are to work loose) Yes, I know, and we are on it. Tony's right about the + being too near the steel box. We are gradually getting this boat better and better, but what pillocks there have been before us! And it's so hard to find anyone to do work - boat electricians, welders... where are they?! that's always the problem with "temporary repairs" they are inclined to stay as a roundtuit job for rather a long time ..... I'm sure most of us have one or two on our boats
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Post by Mr Stabby on Feb 25, 2020 19:15:25 GMT
I wonder what approach naughtyfox will take over that bloody mess? Anyway, as we have been cruisin' with this old tub for 5.5 years (as owners) with those battery connections as they are, I do think it is fuss about nothing and I wouldn't have bothered to have done anything. Life is too short to worry about every little thing. For the time and effort involved, it would be worth rationalising the wiring. As Magnetman pointed out, at some point the starter battery has been replaced and the replacement had a different terminal arrangement, with the corresponding terminals on the far side of the battery, and the then owner has simply added extensions from this position. I don't know why he did this when the current wiring could easily have been re-purposed to fit the new battery. It's normally when you fit a battery where the terminals are further away that you have to scavenge the spare parts locker looking for bits of old cable.
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Post by TonyDunkley on Feb 25, 2020 19:26:23 GMT
The two short links on the starter battery cables [the ones you've been told to get rid of] could originally have been for 2 x 6 volt starter batteries wired in series instead of the single 12 volt battery you've got now, or two much smaller 12 volt batteries in parallel. It looks like the steel frame is the correct size for that particular battery block (643 is in the sticker) ETA its quite interesting the way a bit of brass tube has been wedged into the tapered clamp and a bolt captured in it in order to attach the wire going back to the battery terminal. I would agree with the two battery theory but I don't see where it would go unless a part of the steel securing frame had been cut off. ETA if the terminals were other side this would also remove the problem of the positive terminal being too close to hull steelwork Who knows, and who cares ? The two short links serve no purpose with the starter battery that's there now and need getting rid of, . . the reasons for them being there aren't of any real interest or relevance.
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Post by metanoia on Feb 25, 2020 19:27:32 GMT
Pump comes on when switch at switchboard turned on, with all taps closed. It shouldn't. Keeps running when taps turned off, but goes slower and slower until fuse pops. It should stop as soon as taps are closed. What else would cause this other than faulty pressure switch? that sounds like a sensible conclusion Ross and unless the pumps are exactly the same make, model and age you will almost certainly be wasting your time trying to change the pressure switch over. Your conclusion that you need a new pump is almost certainly the correct one The only sensible reason for repairing either knackered pumps is to keep it as a spare, ready for the next time it fails.edit to add .... of course what actually happens next time it goes, is that you can't find where the hell you hid the spare one .... and end up buying another one anyway … and why do we ALL keep the knackered bodged up bits as spares...…… !!
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Post by JohnV on Feb 25, 2020 19:29:19 GMT
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Post by Deleted on Feb 25, 2020 19:36:12 GMT
I wonder if that arrangement shown in naughtyfox photo was someone's idea of a DIY bus bar. Possibly they ran out of thread on the upright post for the extra things which had been added and had a light bulb (lamp) moment.
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Post by TonyDunkley on Feb 25, 2020 19:47:43 GMT
Anyway, as we have been cruisin' with this old tub for 5.5 years (as owners) with those battery connections as they are, I do think it is fuss about nothing and I wouldn't have bothered to have done anything. Life is too short to worry about every little thing. . . . . . . . . . . . . . . As Magnetman pointed out, at some point the starter battery has been replaced and the replacement had a different terminal arrangement, with the corresponding terminals on the far side of the battery, and the then owner has simply added extensions from this position. I don't know why he did this when the current wiring could easily have been re-purposed to fit the new battery. It's normally when you fit a battery where the terminals are further away that you have to scavenge the spare parts locker looking for bits of old cable. If those two short links were fitted because a previous battery had it's terminals 'on the wrong side', then whoever fitted them was almost as stupid as you are. The +ve and -ve starter battery leads are both long enough without the addition of those short links to have reached either end of the existing battery, . . whichever way round the battery was placed in the tray. How often do you go through a whole day with your shoes on the wrong feet, . . . and wondering why ?
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Post by Deleted on Feb 25, 2020 19:53:20 GMT
I wonder what approach naughtyfox will take over that bloody mess? Well it's not 'our' mess, it's some git what done it. Before we bought the boat. What shall we do? Try to get it sorted out properly, of course. Anyway, as we have been cruisin' with this old tub for 5.5 years (as owners) with those battery connections as they are, I do think it is fuss about nothing and I wouldn't have bothered to have done anything. Life is too short to worry about every little thing. That was exactly the same position mouse was in with his gas installation - you reckoned the only course of action was to hang the previous BSS inspectors high. JohnV has touched on why your battery installation failed. It wouldn't have been a little thing if that positive cable had found its way to the boat hull. Tony has mentioned the disastrous effects of a battery going pop, if nothing else jay cloths and jif wouldn't scratch the surface of cleaning the corrosive mess up had it shorted when a battery was gassing off.
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Post by Mr Stabby on Feb 25, 2020 20:00:39 GMT
. . . . . . . . . . . . . . As Magnetman pointed out, at some point the starter battery has been replaced and the replacement had a different terminal arrangement, with the corresponding terminals on the far side of the battery, and the then owner has simply added extensions from this position. I don't know why he did this when the current wiring could easily have been re-purposed to fit the new battery. It's normally when you fit a battery where the terminals are further away that you have to scavenge the spare parts locker looking for bits of old cable. If those two short links were fitted because a previous battery had it's terminals 'on the wrong side', then whoever fitted them was almost as stupid as you are. The +ve and -ve starter battery leads are both long enough without the addition of those short links to have reached either end of the existing battery, . . whichever way round the battery was placed in the tray. I know they are. That's why I said "I don't know why he did this when the current wiring could easily have been re-purposed to fit the new battery". Do you have the same problems with basic English comprehension as you have with your urinary tract?
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Post by Deleted on Feb 25, 2020 20:09:57 GMT
Yes but at least he misses bridges.
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Post by Mr Stabby on Feb 25, 2020 20:20:10 GMT
Yes but at least he misses bridges. Although he doesn't know how to tie up a boat.
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Post by Deleted on Feb 25, 2020 20:20:56 GMT
How's that help with rewiring battery terminals on your boat in Wiltshire ? You asked how info by telephone helps and I gave an example of that it can and often does. No I didn't. Good luck with being 'talked through' the rewiring of those terminals by phone. Rog
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