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Posted By Jonf
Could you offer me advise - when a house needs a total re-wire (no electrical supply / power) what is the best(safest)way to provide temporary power for tools (drills etc). Use of generator (110V output), total battery power, or temporary distribution board - with RCD wired within the system? Work taking place by sub-contractor.
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Posted By The toecap
We used a generator but placed outsidde and chained up. Beware of the fumes. make sure it is placed away from vents etc.
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Posted By Jonf
Many thanks, this option would reduce potential exposure to 240V, as you say there are "other" issues to consider with the use of generators.
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Posted By lewes
A generator is the best and only way really.
You could try hamsters in a wheel but the food tends to get a bit expensive !! :o)
As already mentioned you will need to position the genny where the fumes do not feed back into the house or affect others, away from combustible materials, allow a suitable cooling down period and take care when re-fueling, make sure you dont over load the supply and some do say the use of an earth stake
Hope this helps
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Posted By Glen Coe
Also remember to provide a suitable earth spike planted in the ground and wired back to the generator or you may not have a suitable earth for your equipment. It would also be sensible to fit a RCD at the point you distribute your power from. Don't forget Coshh for the petrol or diesel. Don't forget PUWER assessments for the use of the generator. and manual handling for the moving of the generator.... consider the trip hazards of trailing cables too!
Cheers
GC
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Posted By Robert.
If it needs a re-wire, then there surely must have been a supply to the building. Why can't you get the supply reinstated, fused and metered,provide the tails to the supply authority meter put a temp consumer unit in and put in a small radial for 240 / 110 transformer. All subject to 16th Edition though.
How would you check / test the effectiveness of any RCD or RCBO, earth loop etc without power to the consumer unit?
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Posted By Bob Youel
is a competent person undertaking the work if so get them to manage the situation
If a non-competent person is undertaking the work e.g. DIY then be very weary/careful as insurers are refusing to pay out after fires etc unless all the work has been undertaken by a proper person
modern cable carries certain ref numbers so insures can check batch numbers etc so the insurers know when the cable was put in e.g. after certain dates i.e. P registrations etc - so even putting in a cable irrespective of connecting it too a circuit can result in questions being asked by the insurers
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Posted By Robert.
Not so sure about what you say Bob. What about extensions to existing circuits which are not subject to test records. Today the new cabling will be to the harmonised standard but existing may be the old Y, B or X rated cable.
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Posted By Glen Coe RCDS are available on trailing leads and can be tested againt a portable generator supply. http://www.towsure.com/p...ent_Mains_Kit_-_3_OutletAs you say though there are ways of having a metered temporary site supply, but for the average DIY use these are great. Also don't forget the noise of a generator is loud and annoying to neighbours.
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Posted By Bob Youel
Robert you have a very good and valid point re old, new & differing cable types when together in one system
However working with loss adjusters lately [Hull area; after the floods -its a gold mine for builders etc!]when they are looking at what appears to be 'new' cable installations and there is any doubt re age of cable thathas been used they are giving adverse reports as they expect all 'newly installled' cables to be 'new' cable and not cable that has been on a drum some where for a few years
Even if the cable used is 'old' [old being ~ a few years not ancient], in good condition and was suitable only a few years ago they are advising rewires / none payment unless the owner can prove that a proper [P reg] spark installed the cables etc
So my comments were just that; 'dont DIY or skimp
Thanks for your comments
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Posted By Jonf
Many thanks to all respondents; it would seem that the use of an external generator, or temporary consumer unit would be the way forward. A suitably wired consumer unit would be the cheaper option, with a transformer conected to supply 110v to tools.
Many thanks.
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