Answer: It depends on the situation
We got caught out and had to replace some white meter housings once as we had drilled holes for 10mm bonding wires, it was a new build and the building inspector didn't like it.
There already seems to of been some shenanagins going on here, there seems to be 3 types of MCB already.
A distribution board change should only be undertaken by a registared qualified electrician, who will also give you all the paperwork required after a board change.
Talk nicely to the next passing electric board man you see, the local SEC guys have them as standard van stock items and are happy to give handfuls away if you engage them in a bit of banter.
(same trick applies to the BT gel crimps if you see someone working in a telephone exchange box)
Todays EICR, one supply feeding two static caravans
Oh yes, it has been tested every 3 years since the the present owners of the site moved in, so thats at least 2 tests that had no faults found.....
My mother in law has still got one in use along with rubber cables, will she let me rewire or change it? Like heck she will, doesn't want the disruption or mess, althogh I have added a second DB and rewired the kitchen when she had that done a couple of years ago.
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