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Posted By Andrew Joule Land
Please can some one give me the details of the regulation / code of practice to prevent the unsafe practice by some contractors who allow 230v power supply being provided by putting three 230volt outlets into a 415 volt three phase plug using one phase and earth / neutral. the out let of which is being used in the same area of work. hence if there is access to two phases then 415 volts could be put across a body instant death or severe injury of a fire.
Remembering that a RCD only protects from Earth / ground leakage not against cross connecting of phases.
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Posted By SteveD-M
Andrew
You should be looking in HS(G) 141 for the guidance. The Electricity at Work Reg 1989 has many duties most of which are strict (not subject to reasonably practicable). I would look through reg 4.
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Posted By Ron Hunter
Surely the use of 240V on a construction site is not to be tolerated - irrespective of how that supply is delivered, and 110v CTE should be the norm.
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Posted By Andrew Joule Land
Thank you for your response. Ron 230 volt is not the norm however, as a supply to the step down centre tapped output yellow colour coded transformers for hand tools etc. it is, as is 440 a transmission voltage. Thank you for the input.
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Posted By Richard Webber
Andrew,
The Constructionskills publication GE 700 Section E4 deals with this.
Many large Construction Companies use it as their Construction Safety "Bible".
Regards
Richard
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Posted By Warren Fothergill
There is a guide to Electricity on Construction Site's. Can't remember, but the emphasis is on risk assessment. If you work to the levels of ALARP, then you would go with the 110v equipment.
There is no set guidance (as far as I am aware), but this places the emphasis on Risk Assessment in identifying the risk, and as the duty is to bring the risk down, that is the best option.
Haven't done construction for a while, but it is a good guide/acop.
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Posted By Crim
My area is shop fitting where I always look for 110 volt equipment with the possible exception of something like a 240 volt sewing machine used by carpet fitters if they are unable to locate a 110 volt version. That would be toward the end of a project where the on site risks are quite low. I would aks for an RCD as well.
Recently I have noticed the majority of hand tools on site are rechargeable, due to progress made by manufacturers of such tools, this gives the user more freedom from trailing cables and me less trip hazards to report. PAT required for charging units on site but I recommend they recharge in the hotel room (out of site out of mind).
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Posted By Andrew Joule Land
Thank you all again for your inputs and advice.
Kind Regards
Andrew.
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