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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
    We have a mentioned maintaining the zones.

    Some of us might have assumed that another point also indicates the existing vertical zone prior to ammendment by this addition.

    Some of us might have assumed it was the only point therefore that zone will be lost.

    Clearly keeping a redundant socket or changing to blanking plate indidcates existing vertical (and horizontal) zones therefore has its merits.

    Ideally of course reroute the cables from above is what most of us would do, zone maintained.


    Plus, as does happen, a blanking plate runs a real risk that years later A.N. Other removes that plate and plasters in therefore removing the zone.


    Another one to watch for in kitchens is that whilst zones should be obvious above worktops but often are not below - if there is a point under the worktop fed vertically to ceiling and there is no point corresponding above worktop in that zone then the setup rather depends on whether the one below is hidden from normal view (washer/dryer etc) or is easily seen because there is only a veg rack there or it`s an open space say.

    Not all DIYers would pop the washer out to take a glance. Fitting a steel cutlery rack could invite disater

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  • 0
    We have a mentioned maintaining the zones.

    Some of us might have assumed that another point also indicates the existing vertical zone prior to ammendment by this addition.

    Some of us might have assumed it was the only point therefore that zone will be lost.

    Clearly keeping a redundant socket or changing to blanking plate indidcates existing vertical (and horizontal) zones therefore has its merits.

    Ideally of course reroute the cables from above is what most of us would do, zone maintained.


    Plus, as does happen, a blanking plate runs a real risk that years later A.N. Other removes that plate and plasters in therefore removing the zone.


    Another one to watch for in kitchens is that whilst zones should be obvious above worktops but often are not below - if there is a point under the worktop fed vertically to ceiling and there is no point corresponding above worktop in that zone then the setup rather depends on whether the one below is hidden from normal view (washer/dryer etc) or is easily seen because there is only a veg rack there or it`s an open space say.

    Not all DIYers would pop the washer out to take a glance. Fitting a steel cutlery rack could invite disater

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