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At the moment all three flats have their 10 mm supply cable attached temporarily to what looks like the original incoming supply and consumer unit. I understand that they are waiting for the board to come and sort it out with new supplies. As for the SWA it has just had the metal sheathing cut...

45 amp cooker circuit, 30 amp kitchen ring main, 16 radial for the bedroom and one 6 amp lighting circuit. Need help on determining the size of cable needed to supply the CU. It's a house being turned into 5 flats. The present sparkies have run 10mm 3 core swa to the flats and into the consumer...

for your information Mr smarty pants owen I asked the question on this forum as well as the other one to see if there would be a difference of opinions between the electrical and heating forums. Furthermore it was a hypothetical question. I wasn't seeking "permission" to do a second class job.

Actually, the rule is the bonding has to be connected within 600mm of the meter and before any tees

thanks jj I know, that's what I meant to say.

If I have to find a way to run the cable then that's what I will do. I was more interested in whether the earth rod was an option or for a view on the reasons why it wouldn't be.

On a new boiler install with no bonding at the meter whose responsability is it to provide one. Also on a particularly difficult access to the main earthing terminal at the meter can an earth rod be used? ( all the way on the other side of the house... with wood floors and decorations everywhere)!

No bonding on a gas meter on the wall outside. Is it possible to earth it to an earth rod buried in the ground outside, adjacent to the meter, as the MET is other side of the house with hardwood floors and decorations everywhere so practically no chance of a cable run, at least not a pretty one!

Rigid 8'x4' Celotex or Kingspan, foil both sides between the rafters/floor joists. As far as the pitched roof is concerned you can use a multi layered solar reflective product with counter battens to secure it and make a void between the plasterboard and the foil. www.roof-solutions.co.uk...

I do understand the duties on employers to make sure that anyone they employ to work on gas is registered with the appropriate body, it was from the diy er's point of view I wanted the lowdown. PS I passed my ACS theory exams last week and have my practicals all next week. Regards

Thanks Bob. I think that has made it abundantly clear.

I hear people on this forum saying you dont have to be Corgi registered to work with gas, if it is in your own home, as long as you are "competent". Can anyone give a definitive legal description of competent to work with gas, own home or not. Thanks. Ps I am only interested in competent to...

I thought they were interesting. Client was surprised when we refused to fit some new garden lights for him. http://s211.photobucket.com/albums/bb283/chicd4/

Can anyone tell me how?

10mm earth cable attached to the pipework within 600mm of the meter on the users side, and before any tees in the supply. Run all the way back to the main earthing terminal. ( usually located by the consumer unit)

Lots of things are that shouldn't be and aren't that should be. Are you suggesting I change the whole cu for a mirror in the bathroom. CU was aquired with the house so I find your advice a bit drastic.

I would like to put a 240 v Mirror with a light in a shower room. The mirror will be above a sink and within 1.5metres of the shower which has a fixed outlet. Whole house is protected via a crabtree cu with 30m/A main RCD. Any advice would be appreciated

sorry, I meant mA!

Thanks for the quick response. I did do a ramp test and it tripped in 26ms

Can anyone tell me if at 1x I delta n device trips in 31 ms @0 degrees and in 28.5 @ 180 degrees is significant. Seemed a bit quick to me!! RCD 30 m/a