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A 10.8KW electric shower will draw 10800/230 = 47A. 6mm Twin & Earth when clipped is rated to carry 47A and could safely carry more. Would I be taking a chance using 6mm instead of 10mm??

You would recommend SWA out of 30A MCB through isolator to main fuse in garage board. How much lower should the main fuse be in relation to the 30A supply from house?

I believe you can buy a device that prohibits both being on at the same time. It may even be a regulation.

I am supplyng a small fuse board to a garage adjacent to the main house with a 4mm SWA. This cable is rated at 36A according to IEEE Table. There are only four twin sockets, a water pump and some lights in the garage installation Do I need to have an isloator switch between both boards...

If all of the plumbing pipework in a bathroom area is the flexible plastic type, nothing would need to be bonded, Right?????

can the fluke 1653 give you a loop impedance figure?

You are absolutely right. I spent ten years working on industrial installations and never had to commission them myself. I do have to provide a completion certificate but because I am out of the business a while the Irish Commissioning Body will come out and check the work carried out. This...

Full marks to the amateur comedian. Thanks Andrew for your sensible answer. That's what I thought. I have also seen ring main testers. Would I need one of these also?

I am nearing the completion of a large two storey house with 280 electrical outlets and will need to certify the installation soon. What testing equipment would I need. Is there any one piece of testing equipment that would enable me to carry out all of the necessary tests? :?:

Hi everyone, I am doing quite a large electrical job with about 250 electrical points. There is about 130 chases to be done on six inch block wall. Regarding the chasing, are there any regulations on chasing across the wall. I will obviously be chasing top to bottom but in some...