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If you require a very approximate size then you can see the replies above but as this subject is often taken very seriously more information is required for a considered opinion. i.e.- Is the window 2.4sqM or 2.4 W x ? H. Dbl or Sng glazed. The internal wall separates what sort of...

yep its PCB for the sigma, even if its on temp - unlikely, PCB activates pump. you could check wiring elec spec in installation inst. http://www.ferrolicommercial.co.uk/Documents/Archive/Installation_Instructions/Sigma.zip http://www.ashfordheating.com/images/uploaded/ferroli_boilers.pdf

thanks lecky & spark, Lectrician said yes I realize thats the stock reply but I'm still curious. securespark said So if its not then, whats the options, can it be done safely with out involving the ODPM - Joke!

Hey guy's hold up a minute, what make is the boiler? steveuk1971 wrote: pump over run can be thermostatic delay, not only timed electrically, we may be talking pence not pounds Regards

ok, I don't believe that to insulate the gas pipe for this reason is a requirement, however equipotential bonding should protect the pipework from an electrical fault either inside or outside of a building, therefore electrial continuity in the pipework must be maintained at all times. As for...

All the best hartly, sincerely check your Part L re: room stat's, potential boiler location and flue route, before leaving tails for engineer to connect to. oh to keep em sweet drop an air test on your install. most local corgi inspectors are now promoting the idea that no installation...

(thanks to all who left comments in the recent thread by david_galashiels, it was very educational.) Can anyone solve the mystery of the seemingly under sized earth bonding? Note from the pic if you can (sorry only taken with cam/phone today) that a 16mm earth is fed back from the CU(not...

The earth block is visible in the photo, with cable in and out, Lead encased supply cable is the most likely for dom/install giving tn-s earthing arrangement albeit under sized. so Davids question was ( although I can't do that quote thing yet) 'How can I get an earth connection into the house...

In the case of the Gas its 'not further than 600mm from the meter outlet and before any branch in the pipework'.

[How can I get an earth connection into the house - there doesn't appear to be any earth cable at the fusebox at all. quote] so this is acceptable for David but he needs who?

does'nt David just need to remove the tar tape on the incomer and add an earth bond and cable of the correct size (16mm)then run to the earth block?