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bigshock

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hello all!

really confused here.


I have an immersion heater top element gravity feed. The fuse box continued tripping after changing. the spur 1 of 2 is feed by a 3amp fuse dedicated to the boiler.

the second spur around 9 inches away was also feed by a 3amp fuse which continued to blow.

I replaced the immersion heater spur with a 13amp fuse from a 3amp the power going to the immersion was not sufficiant.

the question is

is it safe to leave the boiler spur which is 3amp feeding the immersion heater isolater which is now 13amp. the cabling is fine and suitable for 13amp usage 16mm thick
after fitting I checked 24hrs later the 13amp spur is warm but not hot and the water is now working fine.

just concerned the low 3amp feeding the 13amp spur
 
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bigshock said:
hello all!

really confused here.


I have an immersion heater top element gravity feed. The fuse box continued tripping after changing. the spur 1 of 2 is feed by a 3amp fuse dedicated to the boiler.

the second spur around 9 inches away was also feed by a 3amp fuse which continued to blow.

I replaced the immersion heater spur with a 13amp fuse from a 3amp the power going to the immersion was not sufficiant.

the question is

is it safe to leave the boiler spur which is 3amp feeding the immersion heater isolater which is now 13amp. the cabling is fine and suitable for 13amp usage 16mm thick
after fitting I checked 24hrs later the 13amp spur is warm but not hot and the water is now working fine.

just concerned the low 3amp feeding the 13amp spur
Click to expand...
Best call a competent Electrician Bigshock, diagnosing problems like this, remotely, could become dangerous.
 
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Pete999 said:
Best call a competent Electrician Bigshock, diagnosing problems like this, remotely, could become dangerous.
Click to expand...


I did ask the advice of a friend by showing the pictures of the switched fuse spur. been told the immersion should bot be running anything less than 13amp.

only concern was it comes of another switched spur with controls the central heating
 
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[ElectriciansForums.net] immersion heater


so this is the switches now both lights are working along with the heating
 
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that's the thought process I'm suprised it managed before it initially blew. I took the advise of a plumbing and heating engineer to up the one fuse. it has worked just three me it goes from a 3amp
 
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