Ash Burton wrote:

On 29/01/2018 13:05, jim wrote:

Does retrofitting mcbs into an older wylex "fuse wire" consumer
unit need notification?
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Jim K


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Strictly speaking by replacing the fuses with mcb's you could be deemed
to be making changes to the consumer unit and its protective devices
which would require notification to building control.

It may depend on where the property is e.g Scotland but for England and
Wales a call to your local authority building control department would
conrirm if notification is required.

Alternatively unless you already have the mcb's it may be worth gtting
an estimate for the fitting from a local approved sparkie, it's only a
five minute job.

Bear in mind mcb's often trip when lamps blow so access to the 'fuse
box' may be needed more frequently.

My electrician, who may be a bit of a literalist, said that if he were
to make any modification to my installation (other than what he did,
which was to wire an additional consumer unit directly from the terminal
blocks connected to the meter) then he would have to test every part of
it, to ensure that it was safe. Apart from the inordinate amount of
time this would have taken, a few minor alterations would have been
necessary. This would have taken somewhat more than five minutes.
Especially putting sleeving on about half the earth wires in the house.

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Roger Hayter