the NEC includes many requirements for the marking of various types of electrical equipment
Equipment Manufacturer Markings and Labels
Many of the codes requirements apply to markings or labels provided by the equipment manufacturer, such as electrical requirements for motors and appliances, or the ratings of devices such as switches and circuit breakers. Other equipment that is required to carry markings or labels can include motor control centers. switchboards. switchgear. And panelboards. Distribution equipment. such as switchboards. switchgear, and panelboards, may be required to have warning labels applied in addition to any required manufacturer’s markings.
Caution, warning, or danger signs are required by various sections of the electrical codes
- Caution Signs
Caution signs indicate a hazardous situation that, if not avoided, could result in minor or moderate injury
- Warning Signs
Warning signs are used to indicate a hazardous situation that. if not avoided. would or could result in death or serious injury.
- Danger Signs
The danger sign is intended for hazard conditions in which the likelihood of death or serious injury is highest.
Sign Requirements
The details regarding caution, warning, or danger signs, including colors, font sizes, words, and symbols, are specified in ANSI Z535.4