I am currently conducting a few arc flash studies and have run into multiple pieces of over-dutied equipment when running the calculations. We have not reached the stage of applying labels, but was curious as to if there is a standard for this type of scenario. It seems inappropriate to apply labels, and SKM provides a similar message once the calculations have been run. It also seems inappropriate not to apply any label, given that the owner has no interest in replacing the equipment, and there is an increased AF hazard. If there a disclaimer that should be added to the AF label, or an alternative label that should be applied in these scenarios?

IMHO, AF label shouldn't be applied. However, a label describing that the panel is overdutied should be applied.

Mike

Definitely label it as overdutied, but I see no reason not to include an arc flash incident energy label.
Overdutied has to due with bolted fault conditions and is based on the current at the line side of the device. This type of fault is unlikely, if not impossible, to occur except during installation.
Arc flash has to do with a non-bolted fault and is based on the current flowing through the device. These types of faults are much more likely to occur on operating systems.

My only caveat would be if the equipment is overdutied at the current value the arc flash value has been calculated at.