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I might be wrong, but looking at these pics are some of the core's of the T&E running through the PVC conduit without the outer "grey" protective sheathing ? is that okay ?

Is it a regulation requirement to lay "CAUTION ELECTRICAL CABLE BELOW" warning tape 15cm's above buried SWA ? Or is it just a nice to have ?

However are all your circuits on 1 RCD ? or did you end up like me when a spark fitted a CU a few months before 17th edition was to be inforced, and fitted a split load... 5 way non RCD, and 5 way RCD protected. And this is before I understood what 17th edition was. incidentally, if you had a...

Hi, I have referenced the IEE Electrical "Electrical Installation Outdoors: A supply to a detached outbuilding" but am unsure about a few aspects of exporting earth. In my example (recently upgraded earth bonding in the house), I will have 6mm SWA running from the house CU to the garage CU...

thank you all for your inputs.

just to be clear, obviously the above can be done without Part P if it's in a safe zone.. ie. not the kitchen/bathroom etc.

Is there anything on the market (at a reasonble price) which you can use to simulate a fault with your RCD/MCB's ? For example I just had a periodic test done, and the electrician had an expensive piece of kit, which once plugged into a socket, will simulate an earth fault and trip the RCD on...

Thank you very much for the detailed answers. That has certainly helped. The incomer in the garage is a 63amp RCD, what's the maximum cable size you should be supplying to it ? and what's the ideal ?

Advice taken ! The SWA terminates at a waterproof junction box inside the garage. I then run a 5 metre tail (6mm T&E) to the garage consumer unit in a 20mm conduit. Now - the garage CU then runs a 2.5mm supply to the shed. Are there any issues with this running in the same 20mm conduit...

Well the supply from the house CU is running into an RCD (63amp) CU in the garage. 2.5mm seems quite small to me aswell. When running through the calc using single phase and taking into account the 2 touching circuits it say's I can run 2.5mm with upto 4kw of power going through it. More...

I have a 3 core 2.5mm SWA running from my house consumer unit to an external consumer unit in the garage. I've just upgraded this from a standard garage breaker to a RCD protected unit with 7 mcb's. I've just been running through some figures in the TLC Volt Drop calculator to work out if I...

Can a junction box be used to junction two seperate circuits and use the same conduit to run the wire ? For example using 2 seperate terminal blocks as the junction points, but housed in the same box ?

Hi, Due to some recent bad weather, we lost the upstairs lights for 3 days (it took me that long to get my electrician to take a look). Anyway, the fault was due to an outside light at the top of the house having water in it. There was a ground fault. The previous occupiers had the...

Thanks Guy's. I'm not planning to do the work myself, but via a proper electrical contractor. However I've had contradictory advice of a couple of electricians, and feel much more comfortable designing the solution myself and then telling them EXACTLY what I want. It's funny you say that...

Hi, I have a Crabtree Starbreaker Garage Kit installed in my garage. The supply comes via 2.5mm SWA from a 32a breaker on my main house consumer unit (RCD protected). The garage consumer unit only has 2 MCB slots (both protected via an RCD) and currently powers 6a breaker on lights and 16a...