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- 5 Feb 2021
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Hi all, new to the forum so firstly hello!
We’ve recently moved into a new to us house, long ago enough to spot a few gremlins! I’m planning to have the consumer unit replaced as the current one is an old type with plug in mcb’s but no RCD protections.
I’m keen to rectify a few smaller issues around the place in readiness for a full check of the property prior to CU change. Small things like trunking some cables that aren’t secured sufficiently etc.
One issue I’ve spotted is that the upstairs lighting doesn’t have earth feeds to the ceiling roses. There are 2 metal pendant fittings which is obviously not good. I have good access from above and I’ve traced the feeds to a junction box in the loft but the earth on the incoming feed doesn’t have continuity with the earth bonds (checked via multimeter to the nearby boiler bonds and via test wire back to the earthing point at the cu).
I figure I have a couple of options. Run a cpc feed from cu to the loft space separately to the power feed (feels like half a job) or my preferred plan is to replace the wiring feeds to the ceiling roses with new 1.5mm2 twin and earth. I’d like to avoid having to run a whole new feed to the loft if I can so I figure there are a few options:
- Within a foot of the lighting junction box is the shower/fan isolator pull switch which has a good earth. I’d guess it would be bad practice to take an earth feed from this to the junction box for the lights?
-There’s also a larger cpc feed to the boiler which I could take an earth feed from (again I’m guessing this wouldn’t be approved of?)
-Finally there’s a terminated 2.5mm2 t&e feed in the loft which must be from an old water heater installation. It appears to run directly to the cu but is currently fed from the sockets mcb. My thinking was this could become the upstairs lighting feed and be reterminated to it’s own block on the new cu when I get that installed. Does that sounds like a feasible option?
Naturally I’d be having any work signed of by an qualified electrician and/or getting them to do the work in it’s entirety just wanted to sound out if that seems like a reasonable solution.
We’ve recently moved into a new to us house, long ago enough to spot a few gremlins! I’m planning to have the consumer unit replaced as the current one is an old type with plug in mcb’s but no RCD protections.
I’m keen to rectify a few smaller issues around the place in readiness for a full check of the property prior to CU change. Small things like trunking some cables that aren’t secured sufficiently etc.
One issue I’ve spotted is that the upstairs lighting doesn’t have earth feeds to the ceiling roses. There are 2 metal pendant fittings which is obviously not good. I have good access from above and I’ve traced the feeds to a junction box in the loft but the earth on the incoming feed doesn’t have continuity with the earth bonds (checked via multimeter to the nearby boiler bonds and via test wire back to the earthing point at the cu).
I figure I have a couple of options. Run a cpc feed from cu to the loft space separately to the power feed (feels like half a job) or my preferred plan is to replace the wiring feeds to the ceiling roses with new 1.5mm2 twin and earth. I’d like to avoid having to run a whole new feed to the loft if I can so I figure there are a few options:
- Within a foot of the lighting junction box is the shower/fan isolator pull switch which has a good earth. I’d guess it would be bad practice to take an earth feed from this to the junction box for the lights?
-There’s also a larger cpc feed to the boiler which I could take an earth feed from (again I’m guessing this wouldn’t be approved of?)
-Finally there’s a terminated 2.5mm2 t&e feed in the loft which must be from an old water heater installation. It appears to run directly to the cu but is currently fed from the sockets mcb. My thinking was this could become the upstairs lighting feed and be reterminated to it’s own block on the new cu when I get that installed. Does that sounds like a feasible option?
Naturally I’d be having any work signed of by an qualified electrician and/or getting them to do the work in it’s entirety just wanted to sound out if that seems like a reasonable solution.