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sims10000  
#1 Posted : 02 July 2014 08:31:50(UTC)
Rank: New forum user
sims10000

Where can I find the regulations for running power cables, particularly 415AC 3phase?
They are for a pump system connected to an electrical cabinet on a machine, and I want to know if we can run the cables along the floor in open trunking, or if the trunking needs to be enclosed. Or if we must run the cables in trunking above the machine.
Jackie Robertson  
#2 Posted : 02 July 2014 09:02:10(UTC)
Rank: Forum user
Jackie Robertson

Electicity at Work Regulations

Supported by various British Standards / Wiring Regulations
Mebo  
#3 Posted : 02 July 2014 17:00:08(UTC)
Rank: Forum user
Mebo

The 17th Edition.
paul.skyrme  
#4 Posted : 02 July 2014 19:14:43(UTC)
Rank: Super forum user
paul.skyrme

If it is a machine and the pumps are controlled by the machine then there are standards etc. that apply, and you would be looking at compliance with the Machinery, Low Voltage & CE Marking Directives, then you would be looking @ HASAWA, PUWER, & EAWR.
However BS7671 does not apply to machinery, it is specifically excluded in the standard, anyone who knew the standard would know this.
If the pumps are "building services", then you are in a more grey area, the standards you would need to comply with if you wanted to go down that route for compliance could be different.
You need to take professional advice on this from topic experts, not general H&S advisers really.
paulw71  
#5 Posted : 03 July 2014 08:08:17(UTC)
Rank: Super forum user
paulw71

I dont think you will find an answer to this laid out in regulations. Electrical installation cabling is required to have a suitable degree of mechanical protection and that will be dictated by the nature of the area it is being used. If it is in an area where it is likely to suffer damage then obviously higher levels of mechanical protection are needed.

If you are using steel wire armoured cable then this already offers a degree of mechanical protection for the live cores and is usually run on open cable trays, I have see this run along floor areas in many installations and as long as it doesnt present a trip hazard or will not be struck by machinery it should be fine. If you feel that this requires additional protection then by all means put it in open trunking instead. If you are running seperate pvc single wires then it will need to be inside either conduit or trunking and the trunking should have a lid on to afford the wires suitable mech protection.

You need to decide on the safest route to run the cable taking into account the local hazards that may affect it. However like Paul.S said you really need to be speaking to an approved electrician about these matters.

regards
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