Sub main protection???????

[energizedelec]

Ok so western power have put in a new supply 100a cut out fuse and a 100A isolater for me to connect into. Im running a 10mtr 25mm 3 core swa into a loft space and down to a consumer unit. my question is do i need to protect the submain with a switch fuse or can it go straight into the 100a isolater??

 

[KAS1]

Here we go again

 

[KAS1]

Go on have a guess !!!!!!!!!!!

 

[Guest111]

If you have a look through the posts you will find this has been covered several times before,hope this helps.

 

[energizedelec]

Problem is the ones iv read are not clear enough! Am i correct in saying i don't need to install a switchfuse and an isolator is fine as long as the cable is equivalent to the incoming fuse rate?

 

[infinity]

you will require a SF

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with discrimination

 

[telectrix]

tails over 3m, DNO request a SW fuse.