FAQ

112
Material taken from the National Electric Code
®
is reprinted with permission
from NFPA 70
®
, 2023 edition. National Electrical Code
®
, Copyright 2022,
National Fire Protection Association, Quincy, MA. All rights reserved.
NEC
®
Text
New
722 Cables for Power-Limited Circuits
and Fault-Managed Power Circuits
724 Class 1 Power-Limited Circuits and
Remote Control & Signaling Circuits
726 Class 4 Fault Managed Power Systems
Change Summary
• Power limited circuits are being utilized more often due
to emerging new technologies like Power Over Ethernet
(POE) and others. The NEC recognizes this and revised/
added new text to ensure best installation practices.
Since Articles 722, 724 and 726 are entirely new, they
are too lengthy to include in this guide. This guide
serves to make you aware of the new articles and
their scope. If you work in these areas you are best
served to read the complete text in the NFPA70.
Article 722 Cables for Power-Limited Circuits
and Fault-Managed Power Circuit.
Part I. General
722.1 Scope.
722.3 Other Articles.
722.10 Hazardous (Classied) Locations.
722.12 Uses Not Permitted.
722.21 Access to Electrical Equipment Behind Panels
Designed to Allow Access.
722.24 Mechanical Execution of Work.
722.25 Abandoned Cables.
722.31 Safety-Control Equipment.
722.135 Installation of Cables.
Part II. Listing Requirements
722.179 Listing and Marking of Cables
Article 724 Class 1 Power-Limited Circuits and Class 1
Power-Limited Remote-Control and Signaling Circuits.
724.1 Scope.
724.3 Other Articles.
724.21 Access to Electrical Equipment Behind Panels
Designed to Allow Access.
724.24 Mechanical Execution of Work.
724.30 Class 1 Circuit Identication.
724.31 Safety-Controlled Equipment.
724.40 Class 1 Circuits.
724.43 Class 1 Circuit Overcurrent Protection.
continued on page 114