Can electrical circuits be added to current fuse box?

If we do a loft conversion and add new electrical circuits, can these be added to a fuse box which was fitted in 2014 (plastic) which has space? Or does this new circuit require a new metal cased fuse box? What is required to pass building regs?

10 Answers

Midlands home maintenance
9 Reviews, 100% Positive
it should be fine, if you put the loft on its own ring on a 32amp breaker, it will be enough in my opinion
19th Jun 2018
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Weaves Interiors & Outdoors
106 Reviews, 96% Positive
I would replace the fuse board with a new metal one which is up to regulations. Your electrician may also add an additional new board separately to your old and running a separate circuit just to the loft. Without viewing your job first would enable us to advise fully.
14th Jul 2018
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Yes, electrical circuits can be added to a fuse box if certain conditions are met, e.g age of Installation, spare ways available, total current demand will not exceed your main fuse rating e.tc. Some Installations will meet all of these conditions especially if your Installation is Inspected and tested periodically.
23rd Aug 2018
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If adding new circuits even if have space then these need to be brought into the latest standards
26th Apr 2020
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Brick house builders ltd
1 Reviews, 100% Positive
If there is 2 rcd in fues box it is allowed. Its all depends on electrician.
11th May 2020
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Pipe Dreams Services Ltd
1 Reviews, 100% Positive
It will need to comply with current regulations so you could have a separate RCD Board for the Loft conversion which means you do not have to change whole fuse board
30th Mar 2019
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Electrics
0 Reviews
Yes if there is space left in the fuse board you will know this if there are blanks instead of mcbs or other protective devices in place
4th Oct 2018
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Exceptional Spaces
1 Reviews, 100% Positive
You can add them to this board as long as the regulations at the time of installation where met. The whole board will need to be tested and certified if a new circuit is added though, so whilst this is being done it is often not a bad idea to upgrade to the latest specification board.
10th Jan 2020
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Ideally since there is space for new circuit in your fuse box it's fine to go ahead with loft wiring. But to comply with the latest edition of the regs you'd need a metal cased consumer unit
29th Jan 2020
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GC electrical
0 Reviews
I would recommend replacing board. But it’s only an advisory to change( grey area) , so existing could be used
6th Jun 2020
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