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Unsupported wiring

Andrew Walker

Good morning, all.

We have recently had some re-wiring done on the lighting in a CMC machine- and questions have been raised about its compliance with the wiring regs... at the moment we don't want to challenge the person who did the work, as its company politics. 

They have used 3 core wiring from a junction box across a wall and then over to the CNC- they have clipped the wire to an armoured cable that was already in place- the gap from the wall to the CNC is about 3 foot, and there is no support for the wiring over that gap. That wire then terminates in a small transformer for the lighting in the CNC- the transformer isn't fixed to the CNC, it just rests on the top. 

The environment its in is a woodworking fabrication shop- so even with extraction, there is dust present.

Would this set-up fall foul of the regs? 

Thanks in advance

Andy

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    There is no rule that says don't clip or tie  flex to an armoured cable, but it may fall at the ' good workmanship' part of the regs. Also could the ties fail in a fire and cause the cable to drop - if that then blocks an route folk walk under that is certainly bad (and the reason for proper metal support clips when cables traverse ceilings.) It sounds almost like portable equipment, and if it plugged into a 13A socket it would be outside the regs altogether. What do the makers of the lighting kit say in their instructions?

    Mike.

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  • 0

    There is no rule that says don't clip or tie  flex to an armoured cable, but it may fall at the ' good workmanship' part of the regs. Also could the ties fail in a fire and cause the cable to drop - if that then blocks an route folk walk under that is certainly bad (and the reason for proper metal support clips when cables traverse ceilings.) It sounds almost like portable equipment, and if it plugged into a 13A socket it would be outside the regs altogether. What do the makers of the lighting kit say in their instructions?

    Mike.

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