- Reaction score
- 0
Hello all,
A friend of mine as asked me to take a look at his installation and pick out any obvious work he needs doing, before he gets a PIR done.
It's a three bedroom house and all circuits are protected with a dual RCD set up. Mix of old and new colours at CU and all labelled correctly and lighting appears to be sleeved correctly at switches and ceiling roses. Meter tails 25mm, Main earth 16mm, and bonding to extraneous (water and gas pipes) is 10mm and continuous. He simply wants a visual inspection, so I won't be completing any tests - the PIR will see to that.
The one thing i'm not sure about is the CPC run on the lighting. Both upstairs and downstairs were wired in 1mm twin (without CPC) and it seems at some point, a 4mm CPC has been run separately to the ceiling roses and switches. However, there are points where the 4mm has not been run with the original cable. For instance, the upstairs bedroom backs onto an airing cupboard/storeroom. The route for the 4mm CPC drops from the attic, into the storeroom, through the wall and into the bedroom switch through the rear of the backbox. The original twin cable drops vertically from the loft, on the bedroom side of the wall, through the top of the backbox and has been plastered over.
Although the CPC provides protection at both the switch and the ceiling rose, it is obviously not providing any protection along the route of the lighting cable. Any idea what the PIR might have to say about this? Perhaps a Code 3 or 4? Any replies appreciated.
A friend of mine as asked me to take a look at his installation and pick out any obvious work he needs doing, before he gets a PIR done.
It's a three bedroom house and all circuits are protected with a dual RCD set up. Mix of old and new colours at CU and all labelled correctly and lighting appears to be sleeved correctly at switches and ceiling roses. Meter tails 25mm, Main earth 16mm, and bonding to extraneous (water and gas pipes) is 10mm and continuous. He simply wants a visual inspection, so I won't be completing any tests - the PIR will see to that.
The one thing i'm not sure about is the CPC run on the lighting. Both upstairs and downstairs were wired in 1mm twin (without CPC) and it seems at some point, a 4mm CPC has been run separately to the ceiling roses and switches. However, there are points where the 4mm has not been run with the original cable. For instance, the upstairs bedroom backs onto an airing cupboard/storeroom. The route for the 4mm CPC drops from the attic, into the storeroom, through the wall and into the bedroom switch through the rear of the backbox. The original twin cable drops vertically from the loft, on the bedroom side of the wall, through the top of the backbox and has been plastered over.
Although the CPC provides protection at both the switch and the ceiling rose, it is obviously not providing any protection along the route of the lighting cable. Any idea what the PIR might have to say about this? Perhaps a Code 3 or 4? Any replies appreciated.
