Search results

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...

Rcd fused spur feeding extension from ring final circuit. Goes to a 2 gang switch with 1 switch operating 3 downlights and another feeding extractor fan. Zs, R1+R2 and RCD tests completed and are good. Problem is that when you leave the lights off for a few days without touching them, when...

Hello. I’m installing a shower tray and was to do it properly (obviously). I have an 18mm shuttering ply floor and am planning on laying a weak mortar base 5:1 or 4:1 cement. My question is how much mortar and how to make sure there is no air bubbles to easily crack the tray. Secondly, how to...

Hello, does your dpc on the outside need to be the same height as the inner. Below shows the inner floor height at outside ground level, then the inner dpc underneath suspended floor. I’ve heard that as long as cavity isn’t filled, damp can’t penetrate through skins. I do this as i don’t want...

Hello, what i am planning on doing is having 4x2 joists with osb and epdm roof. i plan to put moisture resistant plasterboard and will put 50mm of insulation tight to the plasterboard, which will leave about a 50mm gap of air. I now know i need ventilation, to which i will be putting fascia...

constructing a warm roof will not be possible due to the height of the roof. small joists prevent a cold roof. so i was wondering if i could have an empty void with no insulation, moisture plasterboard if it helps. I understand that i may need ventilation, and i would do this via fascia board...

extension. will have footing then 3 blocks flat on footing, then will have 2 blocks upright going to dpc. my question is that once i have put 50mm of sand then my dpm on the floor, when i get to the blockwork can i cement this into the nearest mortar joint. i was thinking of putting a few blocks...

i am a little confused about mostly testing of sub circuits this is what i get so far and i am basing this off of a shower sub circuit that has a shower cu with a 30ma rcd and a 40a mcb ;; also at the original board there is also a 40a mcb.: you have to test ze at origin of board, then you...

Slight confusion with this tester. when you do a zs it asks for the brown and green to be connected and has the half sign to show that the neutral would be better to connect, obviously connecting this would be better for the rcd zs? anyways when doing ze, do i have to connect the neutral as it...