DIYbanter - View Single Post - In-line fuse holders

Robin

On 13/12/2020 12:37, wrote:
One for our resident certified electrical installers ...
I want to add a spur to feed a wall-mounted smart heating controller,
which has a PSU as part of its wall-mount kit. I don't want to have a
fused spur plate on the wall so am planning on putting an in-line
fuseholder in the back-box for the wall-mount kit. I don't have any
concerns about whether this is safe, but I can't decide whether it meets
the regs or needs any specific labelling.
Can anyone here provide the answer?

I'm not certifiable (yet) but have a couple of questions and comments.

First, what if anything do the manufacturer's instructions require?

Second, I am not clear what - if any - means of local switching and
isolation you end up with. An unswitched FCU to BS 1363-4 counts (Table
537.4 in the regs): you can remove the fuse without risk to life and
limb. But what you propose ain't to BS 1363-4 and AFAICS could only
remove the fuse by opening up the back box. So I think that's a problem.

--
Robin
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