Rank: Forum user 
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I'm looking for guidance regarding electrical hazards on overhead cranes. There are 3 conductors on the OHC at my new place of work and they appear to be sheathed with only access for power from a narrow slot under each conductor. They run the length of the crane and are 3-phase 415v.
I'm not finding anything on the hse website, so wondered if anyone knew where to look? Many thanks
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Rank: Super forum user 
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What are you looking for.
They are placed out of reach, which is an acceptable method of protection under BS7671 and various other requirements including EAWR.
Just look at the DNO & NG bare overheads.
If you have anyone going near them, then there must be very stringent controls in place, if they are live, as there is the chance that the crane could still be moved, if not then they will be isolated so no risk.
They are basically safe, if you treat them correctly.
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Rank: Forum user
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Hi Paul and thanks,
I don't know what those initials are though. We're having work done at height, I'm carrying out a review of the mgmt. System so have no operational control at present, but this came to MH attention and made me 'twitchy' so wanted to spec up.
I don't want to exaggerate the risk if they're insulated by the plastic sheathing. SG6 relates to overhead power lines at 400v requiring 1M clearance. I can't find anything specific to OHC's, so am looking for direction to industry guidance if necessary.
Thanks again and moe welcomed
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Rank: Super forum user
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OK,
EAWR = Electricity at Work Regulations
DNO = Distribution Network Operator (="local electricity board")
NG = National Grid.
Look at the clearance between the pickups, are your "users" getting this close.
Also this is Low Voltage (LV), and it has a VERY, VERY ,VERY limited ability to jump gaps.
Hence my comment on the distance between the pickups.
Now the actual voltage to earth is only 230V anyway, the 400V, (240/415 is no more a nominal voltage in the UK), so to earth, e.g. a body on an aluminium ladder, the voltage at risk is 230V, the same as that in the socket outlet that your bedside lamp or electric blanket is plugged into.
So, over to you for the next round of questions! ;)
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Rank: Forum user
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Hi Paul,
thanks again, I got the EAWR but the others were new to me.
I'm picking up fragmented bit of information from the existing H&S guys, an electrician, and waiting for input from the Lift/ Crane Engineer.
Do you mind me inboxing you?
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