Recent content by electrified

i’m talking about isolating the smoke alarm not the circuit. why does the rcd need changing if it’s an ac?

Ah so i can take a feed from lighting jb and loop the alarms with 3 core, i did see something about smoke alarms being able to be “isolated” without turning off the lighting circuit however does this necessarily mean a switch? because they do technically get isolated when you untwist the smoke...

ac

Need to wire two mains interlinked smoke alarms. Split load rcd board however i believe smoke alarms have to be on their own not rcd protected especially away from rcd that covers socket outlets. But i was wondering if i could take a feed from lighting circuit that is protected by an rcd to my...

if you have 25 ohms the mcb wouldn’t trip anyways it’s too high, what do you have 25 ohms between?

can’t be leakage as it trips after a few days when nothing is on and no leakage to earth that is bypassing the rcd to the neutral via a short as IR tests come back good

RCD can’t be ditched but there probably will an rcd in cu in the future:LOL:. this is really bizarre, but what i will do is L+N-E with everything connected, even though i don’t think it can be the downlighters as no earth present.

this could explain why it’s trips if there is no use for maybe 3-4 days, so voltage drop with naturally cause the rcd to trip from say large loads on at the same time? And i’m guessing rcds and rcbos at the fuse board don’t trip when there is voltage drop as it isn’t ‘latching’

yes it is where i got it from and it’s that one. so this ‘latching’ rcd will trip sometimes if the supply is disturbed voltage drop?

Ok. No nothing that would cause dips or anything. By the way the rcd trips at 24ma on a ramp test. As you mentioned earlier about the magnetic rcd types that trip when power dips, how do i know if i have this type of rcd?

The 2 gang switch was secured to the backbox during this test and readings still came back good.

The switch face Will this damage them? They are intergrated luceco leds. I will only be able to test between L-N as they are double insulated. If possible can i just test these individually with my meter?

When i said everything disconnected that is the 3 down-lighters taken off the circuit yes. the extractor fan is not in yet, the 1.5mm 3 core and earth sticks out of the wall with all conductors separated in 4 wago connectors. my meter can read at 250V. The rcd fcu is a knightsbridge and has...

The 1.5mm twin and earth comes straight from the RCD fcu down to the 2 gang switch, one switch feeds an extractor fan and the other switch feeds 3 downlights. This makes it 3 cables at the switch, one that feeds it and the other 2 are loads going off. That’s all that is on the circuit it’s a...

disconnected cable going out from rcd, IR tested at 500V with everything disconnected N-E= >999Mohm L-N= >999Mohm L-E= >999Mohm so every reading is good but it’s still confusing as to why it’s tripping.