I bought a 4 spot light (on a metal bar) fitting this weekend and the
terminal block has L N E as expected. When I took away the old ceiling rose
the cable only has L N, it would seem to be a spur not a ring. So, can this
fitting not be used ?
No it can't, because you've got no earth. You are limited to
double insulated light fittings with no earth connection (and
likewise, only plastic light switches).
You might just want to double check that the earth wire hasn't
been cut off flush with the cable sheath. However, if the
wiring is old rubber, then you don't want to touch it at all,
until you've had it rewired. Do you know the age of the
BTW, lighting circuits are not rings and hence the concept of
spurs has no meaning. They are radial circuits.
Thanks for your information.
I do have a plastic switch, and unfortunately there is no cut off earth, the
house is 18 years old but the room (now a utility/junk room) was a garage. I
am not sure if the cable is original, I suspect not it's white sheath and
seems to me quite slim, I mean it's not the thick grey stuff that I have
Please could you expand for me on "You are limited to
PS- Andrew - with this 'thin' cable, is it possible to speculate as to what
the max wattage bulb I can safely put in. I can't re-wire,... well I can but
I would have to wreck a very nice artex ceiling
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