Final answer:
Cable run through EMT must be secured within 18 inches of a box, cabinet, fitting, or cable termination according to the NEC to ensure stability and reduce the risk of damage.
Step-by-step explanation:
The question pertains to the installation standards for cable run through EMT (Electrical Metallic Tubing), which is governed by the National Electrical Code (NEC). According to the NEC, cables must be secured at intervals not exceeding 10 feet and within 18 inches of a box, cabinet, fitting, or other cable termination.
For example if EMT is connected to a junction box, the cable within the conduit must be secured within 18 inches of where the EMT terminates at the junction box. This rule ensures stability and reduces the risk of damage to the EMT and the cable. Additionally support for the cable run is required to prevent sagging and provide protection against physical damage.