ppe

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If your PLC panel has 480 volt inside PPE is required. If the PLC only has 120 volt the PPE would be dependent on what you are doing. If your working on the 110V stuff then voltage rated gloves are needed. If your just hooking up the cable to look at the PLC program and that action does not put you in proximity of thw 110 volt, then the PPE may not be needed. Of course this assume you are opening the cabinet door to access the PLC.

The big question I have, are your folks qualified to know what the voltages are in side the PLC cabinet? This may sound trite, but we recently had one of experiened guys poking around in a new IEC designe cabinet not knowing it had 480 volt running thru out the cabinet. Luckly one of our eletrcial folks stopped him before he got hurt. We have since installed 480 volt warning labels but it just goes to shows that expereince does not realet to qualified.

To err on the conservative side, I would make external connections for the PLC hook up and avoid opening the door.
 
ppe

One of the mechanics opened up a stand up panel with 120v and plc's inside and one of the supervisors wrote him up. All he did was look inside with out entering with any part of his body .
 
jimbo123 said:
One of the mechanics opened up a stand up panel with 120v and plc's inside and one of the supervisors wrote him up. All he did was look inside with out entering with any part of his body .
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Well if he was closer than 3'6" to exposed 120V parts he technically violated 70E.
 
dshelley said:
what if you are resetting a manual overload
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Unless you are using a 3' 6'' stick to reset it, then you will be in the limited approach boundry. It does not matter if your there only for a second, that's all it could possibly take for the starter to blow up when it was reset if there is a fault.
 
jimbo123 said:
Is shock protection the ppie needed forplc panals?
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Absolutely. PPE is based on exposure to electrical hazard; not the work performed.

jimbo123 said:
One of the mechanics opened up a stand up panel with 120v and plc's inside and one of the supervisors wrote him up. All he did was look inside with out entering with any part of his body .
Click to expand...

Good for them, the supervisors did exactly what OSHA requires them to do.

dshelley said:
what if you are resetting a manual overload
Click to expand...

Absolutely. PPE is based on exposure to electrical hazard; not the work performed.
 
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