6mm core getting hot


Hi,
The 6MM core running from may shower to fuse box is getting hot and smelling pretty bad when I shower.
The cable has been installed since I moved in over 10 years ago.
I replaced the shower which was 8.5 KW so I assume that the 6MM was fine and didn't need replacing.
I assume the cable has been installed over 15 years ago.
Could this be the age of the cable or simply the shower when turned up causing this.
I have a 30amp fuse in the distribution box.
any help appreciated.
Regards Patty
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Get the connections checked at the pull/wall switch and at the shower and at the fuse box. The bad smell (like fish?) is probably a result of a loose contact that results in burning the cable. A 30 amp supply for a 6mm cable is usually adaquate. Installation methods and voltage drop need to be accounted for though. It is worth remembering that cables do get warm when fully loaded but I am concerned about hot.
Adam
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Many thanks Adam.
I have traced the cable and the Combi boiler is feeding of this cable via a box on the wall.
so basically 6mm cable is cut feeds into a box and the combi boiler is using this feed. | | off to Combi [ ] ------------------- | | 6mm
I think the Wiring into the box may be lose or the box basically old and burnt.
Looks a bit of a botched job but it was here before I moved in.
Can't get to it easily and without light.
will replace the box and see if that helps.
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Is it really ok to have a 35A load on a 30A fuse? I know it'll only be a light duty cycle but thought it might overheat the fuseholder.
--
fred
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Sorry for the delay. Blueyonder have not done newsgroups this weekend.
Well spotted about the 35 amp load, I misssed that. A 30 amp fuse will not blow at 35 amps for a long time (if at all), but the fuseholder will not overheat. It is still not good practice. Depending upon the installation method a 40 amp fuse may be used.
Adam
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It could be the cable breaking down or the connector.
Is 6mm OK for a 8.5 Kw??
I had a fishy smell in my bedroom???? couldn't trace it to anything, had the carpet up & everything, then suddenly I had the main light on and the smell was there and immediatley realised that was the problem, the fiitting had broken down, only a few years old aswell.
Hope this helps
SM
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If the cable run is long you may be getting in to trouble - modern good practice recommends 10mm cable and 16mm if the cable run is over 20 metres. If you have an older fuse box with a cartridge fuse recommendation is 8kw max.

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