Recent content by Eighe

Thanks Adrian, I've just been googling TRS and it seems most of the TRS flexes can be used outdoor, but not permanently. H05RR/ RN-F is not for permanent use. I'm just looking for a reference to H07RN-F suitability for permanent outdoor use as there is some 4 core of that on ebay! I hope...

I'm after some 3 core and earth outdoor type(H05RN-F?) flex to replace a section on my outdoor lights. The exisiting flex is probably not outdoor type stuff as the sheath is perished and failing. The flex goes between a junction box and a PIR. The existing flex is 3 core with the green...

I measure the temperature of the cables beneath the pipes in the hottest joist void(the one with the parralell pipe in) and even with the heating on for 7 hours full blast the wires got no hotter han 24 degrees C. I measured this a the closest point to the heating pipes(30mm between pipe and...

Hi John, I'm so grateful for your patient and pragmatic explanations in this and many other posts I've read. So it derating the rings in not an option as 32A is the only option! None of the rings have any fixed equipment, only plug sockets. The 10mm cable only goes to the cooker(with a...

Yep, MORTgages, tell me about it! Thanks for your reply John, I see what you mean about the design current, but the more I read, the more this value seems like as a bit of a fudge and a moving target. Cookers change(in this case from double oven to single oven), houses change hands...

I'm checking out the electric wiring in my new house trying to see if there is anything I need to get put right before I decorate and live in the house properly. So, I've been reading up and I'm confused about derating grouped circuits. There is trunking(1.5m long 50mmx25mm) in my kitchen...

To me, it seems like the cable would be in a safe zone, It is withing 150mm of the top of the room. It is more than 50mm beneath the upstairs floorboards as it is under the joist. In anycase, it is protected by the steel beneath. Crushing isn't really an issue, as if the joists can crush...

Thanks for your reply Taylortwocities, I'll take a look at those articles. The route is along the horizontal RSJ on top of the steel but under the joists, in the channel formed by timber battons between the joists and the RSJ. the cable would pass under a couple of joists, then head down...

Hi Folks, I would like to have my ring main extended to add a socket, but the joists are full of notches and holes from the previous owner's 'work', so I don't really want anyone to go adding anymore holes, and I'm not keen to see anymore cables crammed into the existing holes. There is an...