Temporary Mobile Electrical Equipment or Cord & Plug Electrical Equipment does this require an Arc Flash Label?

If pieces of equipment can be moved around a facility for various purposes (i.e. Testing Control Panels, Welders, Table Bandsaws, etc.) how do you deal with Arc Flash labeling requirements?

If a piece of equipment is not bolted to the ground, for instance, and can be plugged in to various sources of power throughout the facility via cord and plug connection, how would you go about labeling this type of equipment?

If the equipment can be moved throughout the facility to various sources then the AF Label may not be accurate.
In fact, this actually seems to be more dangerous given that the client/maintenance personal/user is not aware of the difference in Arc Flash(Incident Energy) as it relates to various sources.

Some equipment may be easier to move, because they are on wheels and some not.
We have various clients that are currently asking about these types of equipment, and I have been unable to locate any clear information on these types of setups in the NFPA 70E language.

It seems that placing Arc Flash Labels on a piece of equipment that can be moved around is more dangerous than helpful.
Please advise in regards to how the NFPA 70E interprets this and/or what would be a good recommendation to a client for these types of equipment.
Thank you for your help.

Can you label the receptacles? You could then put a generic label on the portable equipment referring back to the receptacle label.

How large are the circuits (ampacity) you are using to supply your temporary equipment? Is/Are the temporary equipment panelboards or something else?

Mike

Do you work on this equipment live/plugged in? Does it contain internal sources like batteries? If no and no, I'm not sure the arc flash standards apply. No reason to suit up to test for the absence of voltage when you can follow the cord back to the receptacle and ensure its unplugged. There might be a charged capacitor inside, but the risk is from electrical contact and not arc flash.

As others have stated, the receptacles should be labeled.

I could have sworn there were more posts here following my last.
In reviewing 70E 130.5(H), I see no exception for receptacles. Certainly one would at least be testing for the absence of voltage prior to repairing one, and need to assume energized until proven otherwise.

I am assuming the receptacles in question are 208 V or higher, so IE is calculable using IEEE 1584.

Isn't placing an arc Flash Label on receptacles rather untypical?
I have never seen Arc Flash Labels being placed on receptacles unless it is being fed by a disconnect and the Arc Flash Label is then placed on the associated disconnect itself.

Additionally, a lot of times the receptacles are located in walls or locations where you are physically unable to apply a label.
The label will fall off as the walls are not smooth and are extremely hard to apply.

The circuits are 208V 20A or 30A circuits.
The equipment that is powered is a control panel for testing purposes.
The client is utilizing these control panels to test electrical connectors and plugs for airplane electrical components.

This equipment(control panel) is not being worked on live and does not contain any internal batteries.
I believe the main component in the control panel is a power supply.

Thank you for the help everyone.