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Ring Main Joint Box

PG
A kitchen worktop twin S,O, is to be relocated horizontally by about 60cm. 

The ring final cct (RFC) is cabled in buried T&E and the galv' steel back-box is flushed into the plaster/brick wall.

The RFC T&E extension cabling will be buried under plaster, covered in plastic capping along the horizontal  prescribed zone. Visually, it would be reasonable for an electrician to be aware that the route may contain cable(s).

The circuit is RCD protected.

The intent is touse insulated crimp and double insulating tape the jointed cables within the existing box to achieve a maintenance free connection, A 2mm thick (fabricated) plate was to be used to cover the back box and provide additional mechanical protection. The box would then be plastered over.


The questions are:-

1. How many would consider the steel plate back box cover a desirable feature or would a simple plastic cover suffice?

2. Should the original back box be left  unearthed?


Thanks in advance.
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  • 0

    Zoomup:

    I have a strong dislike for any inaccessible hidden joints. They may fail with time and be a real pain to locate. Is it not possible to leave the existing socket where it is and just run a cable to the additional new socket? That way you know where the joints and cables are located. Or leave a visible plastic blank plate to indicate where the old socket used to be.


    I like the fist sentence of 526.3 regarding joint accessibility for inspection, testing and maintenance. I know that there are exceptions, but they don't count in my book.


    Z.




     

Reply
  • 0

    Zoomup:

    I have a strong dislike for any inaccessible hidden joints. They may fail with time and be a real pain to locate. Is it not possible to leave the existing socket where it is and just run a cable to the additional new socket? That way you know where the joints and cables are located. Or leave a visible plastic blank plate to indicate where the old socket used to be.


    I like the fist sentence of 526.3 regarding joint accessibility for inspection, testing and maintenance. I know that there are exceptions, but they don't count in my book.


    Z.




     

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