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Yes - that's sort of my point. Its a two wire test - I connect croc to N, and probe L with the Megger on Hi PFC. The Megger comes back to me and reads "trp". So it doesn't give me a reading. I am therefore asking that as the Hi FPC is a two wire test that doesn't give me a reading, do I...

Using a two wire test on Hi PFC, croc click to neutral, and probe the Live. Megger going through normal process, but then gives up and reads "trp". Obviously nothing trips at the CU. Is this an internal Megger trip? Do I do a no trip PFC with three wires, CPC, neutral and probe the live...

Ok thanks - the door I have is 30kg - been searching the internet, and it appears 3 x grade 7 would do. The screwfix ones I have seen are grade 11 - does that seem ok?

I am fitting fire doors to a flat, and need three hinges per door. There appear to be three grades of dire rates hinges, grade 7, grade 11 and grade 13. What's the difference between these?

Hi - I have recently replastered a chimney breast (6 months ago) after buying a new flat. The chimney itself has been removed and the "open" stack lies just above the room in the loft space. I can actually look down the stack from the loft. There are about three patches of damp appearing...

"Unlike conventional clamp meters, the Megger MMC850 Multi-core Clamp Meter has a complex array of planer magnetic sensor coils to calculate the current flowing in the conductors of multicore cables with either 2 cores or 3 cores, and in either flat or round section cable, up to 100 A. The...

Yes thanks - will do - I get 47A for the 6mm from 4D5?

Actually, I think I'll be OK with method 102 for the 2.5 as once in the attic space, it can be classed as clipped direct as it will not be touching the insulation, only the largest correction factor will apply. I will be arguing with BC about the 6mm though - but I take the point with the...

Yes - I will be calling them, only reason for posting now is I just read the letter from them today and though I was missing something - I don't plan to have the 6mm pass through any insulation anywhere ... I am more concerned with how the 2.5mm radials get treated as they will be in the loft...

1. BC haven't visited - they want to see at first fix - they are commenting from my design document only. 2. The shower cable does not run in an insulated wall it runs in an uninsulated wall and is clipped without insulation (insulation is NOT required by BC, as I have created a VOID with CLS...

And I suppose that is the crux of my question - is a cable "passing through" the min specified 50mm insulation if the insulation is "covering" the cable, or can it be classed clipped if I ensure the insulation is not touching the cable. I appreciate that the ambient temperature might be higher...

I have placed some CLS timber on the back wall, and created a flush wall against this timber using some board to create a void the width of the CLS . This void will be uninsulated (it doesn't need to be insulated, unliked the partition wall for the radials). The void is 50mm, and the 6mm T&E...

Yes - I got that, but based upon my design, as I quoted above they say non compliant, which I don;t really get.

Yes - for the studwork I will have to insulate for BC compliant, which will affect the radials - so do you think BC will take the "worst case scenario", or if I clip the 2.5 to the CLS and the insulation is kept away from the cable by nailing, that would suffice.

Proposal - 6mm T&E clipped direct, 9m from CU protected by 40A MCB supplying an 8.5kW shower. BC has informed me that table 4D5 shows cable not compliant, but I cannot see how this is the case. I have it that the design current would be 37A and the CCC of the clipped cable would be 47A...

Thank - ebay listing says it comes with the CD, so I hope I'll be OK. Cheers.

Thanks PrenticeBoy. Just got the megger for £390 and bought "one of them" just a minute ago.

You mean one of these? http://www.ebay.co.uk/itm/KEWCHECK-Fast-R1-R2-testing-Leave-socket-place-/170580248423?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item27b7600767

OK - thanks. I have taken a look at the 1552 videos on youtube and it looks pretty straightforward. Perhaps a good second user Megger might be better - the "completed" listings on ebay suggest that they might fetch up to £400, which is still cheaper than the new KT62.

How long is a piece of string? Which multimeter? I know, I know ... But the KT62 seems good value for money, and would appear to do all of the tests required for new circuits / CU change? Any thoughts about it...