Even Zog the safety nazi thinks this is overkill.
Training: Wear rubber gloves and don't touch the 277V terminals
EEWP: Not required for <50V, could be required depending on how the lights are configured but even if it applies just issue a standing permit.
Do this.
Bird, I am not suggesting anything , just trying to explain the situation and the companys stand on this. I am talking about a 277v power supply to a 6volt twin head emergency light or a exit sign.
Just trying to get differrent opinuns about job task and why they think the task is dangerous to the average worker replacing batteries or bulb.
Thanks to all help with this.
It's rare that contacts are not exposed when changing a battery. An unqualified employee might decide to pop the battery free using a nice screwdriver made of tool steel. If the terminals are 277V then that might have bad results. Since yours are 6V then probably only possible equipment damage rather than personal hazard. Remember that "
qualified" does not mean electrician. Qualifying the employee to change the battery might be a janitor trained to use PPE gloves, be able to identify the hazards (contacts), examine for damage (eyeball it), and get the battery installed in the right direction.
When the cover is removed to replace the battery - are not the 277 V supply wires exposed inside the unit? Isn't this working hot?
I don't know, just asking.
Some terminals will be exposed: Those that connect to the battery. In this case they'll be 6V (per OP), probably DC, and some amperage. If the manufacturer is stupid then opening the battery compartment exposes the power circuits. If the manufacturer is sane then only the 6V contacts are exposed and probably only need rated gloves for the exchange if that.
Equipment under 50V is not normally considered to be an arc-flash hazard. Therefore the energized work permit may not apply. But yes, strictly speaking it's working hot just not hazardous.