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Posted By Chas
This is one for someone who has immediate access to the IEE Regs (BS7671). Is there a requirement within the regs to have rubber mats in front of electrical switchgear and the like? (If so under what section). Or is it just good practice? Thanks in advance.
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Posted By Ashley Williams
Doesn't it come from the Electicity at Work Regs?
I thouhgt insulating rubber mats conforming to BS921 should be used to prevent earth contact through the floor.
I may wrong?
Ash
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Posted By Is Kismet
Head on block time!
I had a conversation about rubber matting with an HSE inspector several years ago but never felt completely happy with the outcome. His view was that there was no legal requirement for it and that it was not required at low voltages (240v), but possibly at HV levels.
My feeling/experience was (and still is) that rubber matter should be supplied when working live on equipment at any voltage at or over 240v and especially in an industrial environment, and is good practice.
Is
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Posted By Robert.
See reg 14 of E @ work regs guidance
A matt would not prevent injury in the event of a dead short it would only cushion the blow if / when the guy fell.
A mat or other provides a non slip surface but that would entirely depend on the ambient environmental conditions.
In my view there is no specific requirement to provide at low to med voltages, not sure about HV installations though. Recently inspected an HV switch room in London, very clean and tidy, well maintained, no mats!
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Posted By Peter Rose
As our companys NICEIC qualified supervisor, I can tell you that there is no requirement in BS 7671 (16th Edition wiring regs)to provide a rubber mat in a switch room. (Source NICEIC Connections magazine, winter 03/04 edition).
Peter
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Posted By Jeffrey Watt
Not really a rubber mat answer but I found this american site on Wednesday and thought the diagrams and explanations were rather good re shock paths
http://www.allaboutcircu....com/vol_1/chpt_3/3.html
I would be interested in the opinions of the qualified electricians
Kind regards
Jeff
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Posted By Is Kismet
Except the second sentence is wrong - so I didn't get any further.
A bird can stand on power lines because with two points of contact its internal resistance is higher than the cable it is stood on - not because there is only one point of contact (unless it is crossing its legs!).
The one point of contact concept is valid but not in this particular case.
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Posted By phil beresford
Hi Chas - is this in connection with a lift control panel by any chance - if so matting is recommended (BS7255) - not statutory requirement but recommended and good practice.
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Posted By Is Kismet
Is there a reason for that? A specific risk, history .......
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Posted By phil beresford
hi Kisment
It is to reduce electric shock risk to workers at the times diagnostic testing (fault finding) and taking mesurements are required - when these jobs cannot be done with the juice off. Obviously not 100% as there could be other paths to earth - reduces risk does not eliminate it.
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Posted By GT
Ashley, make sure the matting complies
with BS 921, and is not carbon tracking rubber.
GT
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