Are Your Control Panels Safely Labeled?

Sometimes the smallest details should be our biggest priorities. Achieving compliant identification and safety labeling on general-use industrial control panels is key in running a safe, efficient facility. The NEC, NFPA, and OSHA have standards or regulations that we must adhere to. It’s important that these printed labels and identification materials for industrial control panels are legible and can handle environmental stress.


A major DON'T when it comes to proper panel labeling!

Let’s take a look at proper labeling:

Key NEC Requirements Checklist:

  • Manufacturers name and trademark (including a unique serial number).

  • Supply voltage, number of phases, frequency enclosure type number, and full-load current for each incoming supply circuit.

  • Short circuit current rating (SCCR) on all panels and assemblies.

  • Field marking with the available fault current and the date the calculation was made on the panel.

  • Fuse replacement label: Fuse rating, type, and replacement number.

  • Identify if the panel is intended as service equipment.

  • Include a wiring diagram that includes all components provided by the manufacturer.

  • Permanently mark all service disconnects. If a building has more than one service or a combination of circuits, feeders, and services, apply a permanent plaque or directory at each service disconnect location.

  • Warning signs are needed for all control panels supplied by one or more power sources.

  • Identify multiple power source warnings on the control panel cover.

  • Control and breaker panels must have Arc flash warning signs.

  • Disconnects that are located together must be marked to indicate each disconnect's load.

  • All panel and switchboards supplied by a feeder (other than inn one or two family dwellings) need a label to indicate where the power supply originates.

Key OSHA Requirements Checklist:

  • Electric equipment will be marked to identify the manufacturer or responsible organization, and to show the equipment’s voltage, current, wattage, or other ratings.

  • Identify potential workplace hazards and use one or more symbols to communicate the hazard and indicate how to avoid it.