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Home > Archive > Electrical Engineering > April 2007 > Emergency pullcord
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Emergency pullcord
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| woodglass 2007-04-18, 9:25 am |
| Regarding emergency pullcords/wires on powered machinery:
I mean the type that is used to trigger an emergency stop on a machine
if the operator pulls it, or steps on it.
(The cord/wire runs horizontally between the normally closed switch
that it operates, on one side of the machine to a fixed 'eyelet' point
at the other end of the machine)
Should the cord/wire be of a specific colour ?
TIA,
woodglass
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| woodglass wrote:
> Regarding emergency pullcords/wires on powered machinery:
>
> I mean the type that is used to trigger an emergency stop on a machine
> if the operator pulls it, or steps on it.
>
> (The cord/wire runs horizontally between the normally closed switch
> that it operates, on one side of the machine to a fixed 'eyelet' point
> at the other end of the machine)
>
> Should the cord/wire be of a specific colour ?
>
> TIA,
>
> woodglass
>
I've installed a ton of these. Not sure if there is a requirement, but
they always seem to have a red cable when supplied with the switch.
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| Palindrome 2007-04-18, 9:25 am |
| woodglass wrote:
> Regarding emergency pullcords/wires on powered machinery:
>
> I mean the type that is used to trigger an emergency stop on a machine
> if the operator pulls it, or steps on it.
>
> (The cord/wire runs horizontally between the normally closed switch
> that it operates, on one side of the machine to a fixed 'eyelet' point
> at the other end of the machine)
>
> Should the cord/wire be of a specific colour ?
>
AFAIK, the colour need to contrast against the background - so a red
wire with red machinery or yellow wire with yellow machinery wouldn't
get approved during an H&S inspection. If it isn't clearly visible, it
has to have contrasting colour markers on it to make it so.
There may or may not actually be written rules about this - it may be
just down to the guy writing the risk assessment to specify.
--
Sue
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