Timotei
Member
Good morning all. Would appreciate your thoughts on the following.
Call out yesterday to 1970's domestic property with 50% of ground floor lights not working, no MCB trip (lights not RCD protected). I was hoping for a relatively straightforward binary search, checking at ceiling roses for a "broken" loop or perhaps a dropped neutral...unfortunately all ceiling roses have only switch live and neutral, with L / SL at switches, so now facing the needle in a haystack search for JBs under the floor.
3 MCBs are serving lights, but none are labelled, combination of T+E / singles (borrowed neutrals?) from the MCBs, all terminations within DB confirmed with 241 volts at each MCB. No voltage at switches or lights for those not working.
My plan on return is to lift boards on first floor above switch locations hoping to find JBs and the "missing link", starting at the switch drops for the non-functional light nearest the last working light.
Depending on the route of the radial circuit (which often seems to be anything but logical in these houses) this is a bit hit and miss, not the sort of fault finding process I like to use.....so am I missing anything, would anyone suggest a different approach....is my logic off?
Many thanks in advance,
Timotei
Call out yesterday to 1970's domestic property with 50% of ground floor lights not working, no MCB trip (lights not RCD protected). I was hoping for a relatively straightforward binary search, checking at ceiling roses for a "broken" loop or perhaps a dropped neutral...unfortunately all ceiling roses have only switch live and neutral, with L / SL at switches, so now facing the needle in a haystack search for JBs under the floor.
3 MCBs are serving lights, but none are labelled, combination of T+E / singles (borrowed neutrals?) from the MCBs, all terminations within DB confirmed with 241 volts at each MCB. No voltage at switches or lights for those not working.
My plan on return is to lift boards on first floor above switch locations hoping to find JBs and the "missing link", starting at the switch drops for the non-functional light nearest the last working light.
Depending on the route of the radial circuit (which often seems to be anything but logical in these houses) this is a bit hit and miss, not the sort of fault finding process I like to use.....so am I missing anything, would anyone suggest a different approach....is my logic off?
Many thanks in advance,
Timotei
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