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John Peckham:
JPC
"Tenants should not be touching electrical installations, Class 1 or otherwise. If they do, you really cannot prevent them harming themselves"
So clearly you cannot use double insulation as a method of protection as the installation is not under effective supervision?
Nothing is effective as a method of protection if tenants start fiddling with electrical installations. You said as much yourself really, in your post: "even though the circuits have a CPC I find un-earthed light fittings and dimmer switches ". Those fiddled-with metal Class 1 light fittings and dimmer switches are even more dangerous than a Class 2 fixture.
Sparkingchip:
Has any upgrading work been carried out at all? Are the lighting circuits protected by 30 mA RCD?
Andy B.
On other circuits, yes, about 15 years ago but not on this lighting circuit except for changing the fittings to Class 2. Yes the lighting circuit is protected by 30mA RCD.
Chris Pearson:
So the least bad solution might be to rewire the circuit.
The tenant does NOT want that. I have talked to her and she is happy that the electrics are safe (it passed EICR five years ago and nothing has changed). She works from home and has children. Re-wiring would be very disruptive and very dusty because wires are buried in the wall and not conduited. The house is full of furniture which would have to be removed. It would be a nightmare for her.
If the house was between tenants and empty I might agree.
JPCoetzee:Chris Pearson:
So the least bad solution might be to rewire the circuit.The tenant does NOT want that. I have talked to her and she is happy that the electrics are safe (it passed EICR five years ago and nothing has changed). She works from home and has children. Re-wiring would be very disruptive and very dusty because wires are buried in the wall and not conduited. The house is full of furniture which would have to be removed. It would be a nightmare for her.
If the house was between tenants and empty I might agree.
So you're happy; the tenant is happy and won't dob you in to the Council: all you need now is a happy electrician. Perhaps call back the one who did the last EICR?
John Peckham:
JPC
"Tenants should not be touching electrical installations, Class 1 or otherwise. If they do, you really cannot prevent them harming themselves"
So clearly you cannot use double insulation as a method of protection as the installation is not under effective supervision?
John, I also note 411.3.1.1 - CPC required at every point in wiring with the exception of the two-core between a ceiling rose and a pendant lamp holder.
Would your code be influenced by the presence of RCD protection? (I realize that it wouldn't stop a class I light fitting being live until somebody provided a pathway to Earth.)
JPCoetzee:
Re-wiring would be very disruptive and very dusty because wires are buried in the wall and not conduited.
Then the new stuff goes in plastic minitrunking on the surface (with sufficient fire-resisting retaining clips).
Or if the ceiling voids are reasonably accessible*, and the only chasing required is switch drops, leave spare cable in the void and use a ceiling-mounted pull switch, or one of the wireless switch systems. *If bedroom carpets have to be lifted, put the tenant in a hotel for a night and tell the sparkies to work a night shift, including moving stuff.
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