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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

    PG:

    Thanks - I think that I may switch to the silicon seal of a blank plate proposal.



    Consider also new tiles at blank plate. Silicon seal is usually a bodge by a tiling amateur, and a pita when fault finding or at an inspection. I was in house the other day.(sockets tripping), where the customer didn't want sockets removed for fault finding, because of sealant and a gap around tiles. A sharp knife solved the problem, to his satisfaction!


    Also same house - 2 twin 13A spurs above the kitchen top sealed in, and a metal single gang box mounted on top of another twin metal box, for a flexible cable to the microwave in front - no plug! Customer seemed pleased with the new kitchen .......... I made an excuse and ............. ran away..  


    Jaymack


    Jaymack.
Reply
  • 0

    PG:

    Thanks - I think that I may switch to the silicon seal of a blank plate proposal.



    Consider also new tiles at blank plate. Silicon seal is usually a bodge by a tiling amateur, and a pita when fault finding or at an inspection. I was in house the other day.(sockets tripping), where the customer didn't want sockets removed for fault finding, because of sealant and a gap around tiles. A sharp knife solved the problem, to his satisfaction!


    Also same house - 2 twin 13A spurs above the kitchen top sealed in, and a metal single gang box mounted on top of another twin metal box, for a flexible cable to the microwave in front - no plug! Customer seemed pleased with the new kitchen .......... I made an excuse and ............. ran away..  


    Jaymack


    Jaymack.
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