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OSG Ref B installation limits

WireWeHere

Table 7.1(ii) of the OSG includes Installation type B* which is "Enclosed in conduit or trunking on a wall, etc." This isn't included in any of the allowed installation methods of Table 7.1(i).

What "installation method" classification do you use when installing T&E on a blockwork wall in oval conduit, in a chase for subsequent plastering over? Equally, when the wires are just chased in and plastered over, or do you just consider that type C "clipped direct"?

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    Indeed, I was only pointing out that sometimes a bit of interpretation may be  needed.  - it is not a problem if something else is done.

    I have heard of cases where  some folk doing inspections are a bit funny and decide 'not a valid installation method' is a reason to fail a length of SWA in a cavity wall or something. There may be other reasons, but not being in the tables is not really one.

    Mike.

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    Indeed, I was only pointing out that sometimes a bit of interpretation may be  needed.  - it is not a problem if something else is done.

    I have heard of cases where  some folk doing inspections are a bit funny and decide 'not a valid installation method' is a reason to fail a length of SWA in a cavity wall or something. There may be other reasons, but not being in the tables is not really one.

    Mike.

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