Electrical Panel Label Requirements

Nec standards also require 3 feet of clearance around electrical breaker panels.

Electrical panel label requirements.

National electrical code nec article 110 16. To help prevent shocks and electrocutions osha standard 29 cfr1910 305 d. This standard has been updated to provide consistency of terms with other standards that address hazards and risk. In addition to osha standards electrical panels fall under national electrical code nec regulations.

These requirements apply to field applied markings and signage. The electrical code requires you to label or index your panel. These requirements are echoed in nfpa 70 2017. Unless changes in the electrical distribution system s render the label inaccurate labels applied prior to the effective date of this edition of the standard shall be acceptable if they complied with the requirements for equipment labeling in that standard in effect at the time the labels were applied.

Whenever electrical work starts it s time to review the national electrical code nec. Nfpa 70e labeling requirements by. Most facilities have a transfer switch that is designed to sense a loss of power and then transfer from the electric utility feed to an on site generator feed to re energize a. What you need to do this yourself.

1 minimum depth of clear working space in front of electric equipment with a nominal voltage to ground above 25 000 volts may be the same as that for 25 000 volts under conditions a b and c for installations built before april 16 1981. When you have an electrical problem and need to shut off a circuit you should be able to identify the controlling circuit breaker immediately by looking at the panel index. This code book explains the many rules and requirements while also providing guidelines for safety. The working width around the panel must be at least 30 inches.

Note how the phases are marked in this example. When it comes to a new or replacement breaker panel be sure to get started by choosing a location that conforms to nec code. Additional labeling requirements are listed in 2017 nec article 110 21. Notes to table s 2.

One of those rules is to have your electrical panel appropriately labeled. The electrical safety authority sets out a clear set of rules and policies to ensure the safety of the public. Condition a exposed live parts on one side and no live or grounded parts on the other side of. This panel shows all the appropriate labeling as required by the nec and nfpa 70e per ansi z535 label design formats.

Both of these sections address the first reason to provide descriptive equipment labels.