Recent content by jabmesen

Thanks- that does help- It's a job for someone I know- they are a good distance away and I'm doing a couple of straight forward jobs too....I don't fully understand what's happening above the plasterboard (there is insulation but there may be some void) and wanted to know if in the worst case...

thanks- so I suppose the feed and/or switched live must go through the rafters!? So I suppose I was thinking of cutting the insulation near rafters and feeding cables below or even above insulation. The ceiling is going to be skimmed after. Does anyone know of any good surface mounted downlights...

Hi -I have the job of fitting 6 LED downlights on this ceiling (approx 7 x 5 meters) The light brown beams are superficial and are coming down, there is solid insulation between the plaster and the roof. Has anybody got any good advice for getting the downlights in and running cables from the...

Hi- just wanted to see if any other experts have an opinion on this....Thanks to binky for the replies already given.... There is a corrugated steel roof on an outbuilding and it does have some twin and earth running close to it, inside and across jousts (though it isn't crushed). As long as...

Thanks- again really useful- and its not 30 mts long

: D They both mean a similar thing...

...Well, it helps me understand a little more about cable identification....

Thanks - that definitely helps :D

typical ; greedy when it comes to pi!

Wierd... am I doing something wrong then? 0.83 so halve that for the radius ie 0.415 then square it 0.172225 then times it by pi =0.54202652 and multiply by 7 = 3.79418564..... i was using 3.1472 for pi

Thanks- great advice.... it runs underground is this comparable to being clipped direct?

well- I measured each strand with callipers and took an average but they were pretty much all the same, but, I only did it at the end of the cable that I stripped .....

thanks again Binky for your help....one last question: is it normal for 4mmsq cable to have a (calculated) 3.7mmsq cross section- just curious!

Thanks for getting back to me - really helpful- so the 3x4 inscription means 3 cores of 4mmsq ? Im not planning anything special - just 13amp stuff- there was a 32a mcb on the circuit and I was concerned thats all- but at 4mm that should be fine I think? I wish there was a clearer way of...

Hi - I assumed some swa cable was 3 core 2.5mm , but I have done some calulations based on the strands in each core and suspect it to be 4mm - obvs that is great news... also on the outer the cable reads BS5467 BASEC DEMFS KABLO 3 x 4 2010....3x4 means 3 cores of 4mmsq ?