OESC 722.24 Mechanical Execution of Work.

In Oregon, these cables must be secured and supported in accordance with NEC 300.11.
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In Oregon, these cables must be secured and supported in accordance with NEC 300.11.

Section 722.24 provides requirements for installing, securing, and supporting Power-Limited Circuit cables and Fault-Managed Power Circuits.

The OESC has amended the rules in 722.24(A) to delete the listing requirement for cable ties as follows:

722.24(A) General. Cables shall be installed in a neat and workmanlike manner. Cables installed exposed on the surface of ceilings and sidewalls shall be supported by the building structure in such a manner that the cable will not be damaged by normal building use. Such cables shall be secured by hardware, including straps, staples, hangers, listed cable ties identified for securement and support, or similar fittings, designed and installed so as not to damage the cable. The installation shall conform to 300.4 and 300.11.

Oregon amendments to the 2023 NEC® are located in “Table 1-E” of the Oregon Electrical Specialty Code (OESC) which can be seen using the following link or the OESC PDF file located near the bottom of the screen: 2023 OESC

  Click here to view the OESC  

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OESC 722.24 Mechanical Execution of Work.

Below is a Real Question from our Electrical Continuing Education Courses for Electrical License Renewal:

In Oregon, which of the following is true regarding the installation of Class 2 circuit conductors above a suspended ceiling?

A: The cables must be fastened to the ceiling grid support system.
B: The cables must be secured within 12 inches of any splice box.
C: The cables must be secured at 4.5 foot intervals.
D: The cables must be installed in a neat and workmanlike manner and in compliance with NEC 300.11.
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