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The cost is £69 + VAT - making it around the £82 mark. That does not include fitting etc - but as the spark is a mate - he'll do that for free. Regards... Maurice

Thanks for the reply. The new unit costs about £82. Not cheap I thought. I haven't been doing the quarterly test you suggested - but thanks for the tip - I will do in future. He did the test at 5X and it registered 50ms on both the Hot Tub circuit and the ring main. He did not test at...

I should have added that all other tests on the Hot Tub circuit showed it as pretty damm perfect...so it does seem to suggest something other than that circuit. Maurice

Hi, I have a Mem 2000AD consumer unit that is fitted with a 80A 30ma 30ms response time RCD. Its a A80HE. I have recently added a new circuit for a Hot Tub and on testing this the sparky found that it took 50ms to trip and said my RCD was faulty and would have to be replaced. He tested on...

I'm installing furniture which as luck would have it - runs right down the middle of a double socket. Whats the easiest way of moving it a socket width to the right without causing a real mess? Thanks... Maurice

I have a 4 pole 32A Rotary Isolator switch which I am planning to use to Isolate the supply to a Hot Tub. The supply is fed from a 3 Core 6mm2 SWA cable. The Isolator switch is obviously designed to switch 3 phase and Neutral and has two other earth connection points. My question are -...

Hi, It's been recommended as I am supplying a Hot Tub in the garden and it needs to be on its own circuit. The recommendation is to enable me to future proof the supply somewhat by having a mini CU in the Garden enabling me to run further supplies in the future for lights / sockets etc...

Hi, I'm installing 6mm2 SWA cable on the outside wall and across the loft. Are there any regulations relating to the distances between cleats either inside the loft or on the outside wall? Also any other no no's that I need to be aware of? I intended running the cable across the loft by...

Hi, I have been recommeded a weatherproof CU MK5704 from TLC. I intend running 10mm2 SWA to the unit. I have read on the TLC site that it has 20mm knockouts and it looks plastic in its construction. 1. Will it being plastic affect my ability to terminate with a normal gland ? 2. The...

Hi, I'm involved in using some SWA cable over a longish run. As its quite expensive I think I'll be utilising the armour as the earth (as I know you have to earth it anyway). As a result I only need to puchase two core cable and it got me thinking - why would I ever puchase 3 core cable in...

Hi, I have a need to install a 32A supply to the garden for Hot Tub. It a fairly long run of about 40m or so involving leaving the CU going up an external wall, across the loft, down an external wall to a weatherproof Mini CU. From the Mini CU I would then like to run to an Isolator...

Chris, Many thanks again. I hadn't appreciated that you proposed a localised CU meaning a couple of RCD's in circuit - but I can see that makes sense as I will have some flexibility in the future. The Hot Tub says it must be the only device in the RCD circuit - so your arrangement does neatly...

Chris, Thanks very much for the reply...a couple of comments below... Q1 - I'm gutted to find out it 10mm2 rather than 6mm2 - makes it a lot more expensive. Are you really sure of the sums on that - The reason I ask is that I tried using a calculator on some site and it seemed to suggest...

OK thanks - I'll have to do later as my wife has gone to France and taken the digital camera -aaaaaaaaaarrrrrrhhhhhhhh... Maurice

Hi, Whats a easy way of working out what sort of supply you have? Can I just ring the supplier ot the Local Authority? TT? TN-S or PME ? Thanks... Maurice

Hi, I am thinking about installing a hot tub in the garden and I have a few questions. The hot tub in question apparently requires a 32A RCD. It has a 5.5kw heater and a number of other items / pumps which I am sure contribute to the majority of the 32A load - but i suspect it does not...