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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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telectrix

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Matthewd29

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