Alterations to an installation with a 1980s (?) Wylex board protected by a single external RCD

Toneyz · Jul 7, 2018

littlespark said:
My parents house was built in 74. same age as me, and it has solid cores in the T&E.... and that's T with an E... not just T on its own.
So I think your estimated age is a little on the young side.

Asking some of the older gentlemen on here, was there a changeover period in the regs when imperial changed to metric sized cables?
Like when the harmonized cable colours came in, we had 2 years to use up the old stock.

But you weren't supposed to mix the two in a new installation,well that's the rule by I went by at the time we were doing blocks of flats so I ordered loads to complete the ongoing block and new colours for blocks onwards.

buzzlightyear · Jul 7, 2018

Soulcraft Electric said:
The client has only just purchased the property and is not cash rich...

if he has not got the Moines to pay for this then he has not got the Moines for you. he could pay you £1 per week till its paid .

Soulcraft Electric · Jul 7, 2018

Thanks all for your input. I guess the key reference is from p. 116 of the Sparky's Guide to the Building Regs, that states:

"1.6 Regulation 4(3) states that when building work is complete, the building should be no more unsatisfactory in terms of complying with the applicable parts of Schedule 1 to the Building Regulations than before the building work was started. Therefore, when extending or altering an electrical installation, only the new work must meet current standards. There is no obligation to upgrade the existing installation unless either of the following applies:
(a) The new work adversely affects the safety of the existing installation.
(b) The state of the existing installation is such that the new work cannot be operated safely."

The L/N were both 7/029 with the CPC 3/029. I've attached a snap of the board, it's similar to some of these Wylex Standard white plastic fuseboxes - https://www.flameport.com/electric_museum/wylex_fuse_boxes/wylex_standard_white_plastic.cs4

View attachment IMG_0152.JPG