Control Voltage on Data Labels

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fifty60

fifty60

Senior Member
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USA
What is the use of putting the control voltage on Data Labels that are affixed to the machine enclosure? For example, my main power is 480/277VAC, why would I need to have the control voltage of 110VAC on the enclosure as well?
 
So the observer cannot claim ignorance...??? :p

On the serious side, does the standard you are complying with require it?
 
It does not. So as a minimum requirement it is not, but as good design practice I guess it is giving anyone servicing the machine a heads up regarding what voltages are inside the enclosure...
 
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