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Hi guys, Here to bother you with another boring design question. I am running through my design course and doing great so far. I've just completed all of the required lighting circuits, so I'm good with Ib<In<It, calculating SWA as protective conductor, adiabatic requirements, etc. I have...

Hi Guys, I have a question about derating for grouping factors. I understand how to use Cg (etc..) and why. But what would be the maximum run of grouped cables to not have a derating factor applied? eg. cables leaving the rear of a CU could be grouped for a very short run, possibly only ~50mm...

Hi guys, I might be having a brain fart on this one, but can anyone enlighten me on this one: (Stop me if I'm talking bum at any point) When designing a circuit you calculate the R1+R2, add it to the Ze, end up with Zs. You then do Uo x Cmin ÷ Zs to get your PEFC. So you have a PEFC based off...

Hi guys, I was talking to an electrician recently and we got chatting about consumer unit changes (I'm training currently so thought I'd pick his brains), and he mentioned something that I was unsure about. He said after you do a CU change, you HAVE to do a full condition report of the entire...

Hi Guys, I have recently been retraining to become an DEI electrician with Access Training, I was a bit dubious about the course at first but it's been a lot more in depth than I was expecting and with a good amount of self motivation I seem to be getting along well. There is also a practical...

Hi all, I am currently training part time whilst still working a full time job, and I'm really enjoying. I have a reasonable amount of basic electrical installation experience, like fitting/extending ring final/radial socket circuits, and lighting circuits. The theory side is all a bit new to me...