Following advice from the on site guide which mentions gas pipes "should be sheathed with an electrically insulated material of at least 230v" if they be within 150mm of a CU. Can anyone recommend suitable material, some sort of tape perhaps ? I expect the usual tape is a bit thin. Im replacing a CU and cannot possibly place it at least 150mm from the gas pipes. Cheers all
http://www.screwfix.com/p/economy-pipe-insulation-15-x-13mm-x-1m/72357 http://www.screwfix.com/p/economy-pipe-insulation-22-x-13mm-x-1m/91078 http://www.screwfix.com/p/economy-pipe-insulation-28-x-13mm-x-1m/38391 http://www.screwfix.com/c/heating-p...p=managedredirect-_-plumbing-_-pipeinsulation I don't know what size the gas pipes are Space and whether they are ct or barrel, however that aside - the links might prove useful. If you can use the pipe insulation then it must be well flagged up as Gas.
I dunno Space but I would have thought pipe insulation as in links posted would have the requisite dielectric strength tbqh. Never come across that kind of thing though in rewires/db fitting.
Had to nip out but back now; so need something to comply with the onsite guide about cu's being 1500mm from any gas pipe, if this not possible then it recommends the gas pipe to be sheathed in electrically insulated material of at least 230v. Looks like I might have to split some conduit and use that. Was hoping theres some electrically insulated lagging or something, failing that I could box it in but its a pain.
Its segregation between low pressure gas systems and electrical equipment per BS6891. BS7671 528.3 just says 'protected against the hazards likely to arise.......' As Deleted member 11267 says (also in the OSG note G=guide) a barrier of electrically insulating material interposed between the gas installation and the electrical installation. Not sure how much good that would do in the event of a gas leak.
Doubt it would make much difference tbh, its a headache this. What about splitting some conduit, enclosing it round the pipe and taping it up, boxing it in is not possible unless I take the walls down.
Pipe insulation is not going to cut it. 25mm or 32mm flex-conduit split down one side? Rigid conduit would be a pita to fit.
I don't see why not. The requirement is for "electrically insulating material". Is there more to it than that?
There is no spec for the foam insulation though is there? How would you confirm it? You could use christmas wrapping paper, or a toilet roll tube, their insulating to the same degree......
Bearing in mind that wires should not be covered with loft insulation is pipe lagging a potential problem? I use this for protecting pipes from corrosion in chases it is just like a wide version of electrical insulation tape might be worth enquiring if it would fit the bill. https://www.bes.co.uk/product/216~IE~7828~Heavy-Duty-PVC-Pipewrap-Tape.html
If the chaps fitting a new cu then this will be of the metal type - on the presumption that the cu case is patent with earth, then how can an a arc bore a hole through the cu, and then onto ct/barrel pipe? This is on the presumption that mains pd at cut out position is around the 240v mark, and not 11kv etc.