- Reaction score
- 95
to the one covered by the other rcd ?
Apologies I'm missing the point to doing this... apart from thinking the rcd might be too sensitive or to check it trips the other one ?
Discuss rcd tripping after smoke alarm fitted. in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
to the one covered by the other rcd ?
It could be you have the L and N across 2 different RCDS I'm clutching at straws but worth proving a point, hence borrowed NApologies I'm missing the point to doing this... apart from thinking the rcd might be too sensitive or to check it trips the other one ?
I understood you supplied the new detector straight from the CUIt could be you have the L and N across 2 different RCDS I'm clutching at straws but worth proving a point, hence borrowed N
Is your cable the white 2.5 LSOH cable?
yes Murdoch I had checked using a wander lead for each cable at the different areas.Are you 100% sure you used the same cores in the interconnecting cable the same in each leg?
If you did IR at the board this wouldn't include the interconnecting cable so I suggest that you dis the smoke base and do IR across all 4 cores and see what comes back - and at the same time double check the colours and consistency.
I understood you supplied the new detector straight from the CU
apologies Murdoch if I seemed ungrateful I didn't intend to come across that way.I am trying to help here!
So there was originally 1 smoke alarm, fed by T&E from the fuseboard.
You've added another smoke and a heat alarm to the existing smoke.
Now either 1 or the other RCD will trip.....
You've used 3 core cable for the new smoke & heat?
Or have I missed something?
No offence taken!
Are you 100% sure you have the neutrals in the correct places in the smoke alarm bases
L
IC
N
What is the "new" cable run like? all clipped?
Still think you need to dis the new part and IR the new bit - and you must IR between ALL cores to make 100% sure.
The other cable is lighting circuit for hall.Sorry if I've missed something here but what is that other cable in the MCB? if the other RCD is tripping sounds like the crossed neutral. Just a thought but have you checked the two neutral bars are doing the corresponding MCB bank.
Reply to rcd tripping after smoke alarm fitted. in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net
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