Toll Free: +1-800-930-9414
Section 110.22 requires every disconnect to be legibly marked to indicate its use, that is, to indicate what it disconnects.
If there are multiple switches and multiple pieces of equipment, each switch must be identified to show what equipment it is intended to control or disconnect.
The one exception to this rule, where a disconnect does not require labeling, is when it's obvious what the switch controls, for example, if the switch is next to a single piece of equipment.
© Hughes Associates,Inc. 2012