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Technical Section

ER- Exposed Run Approval for Tray Cables

Type TC-ER: 600V
2008 NEC Article 336.10 (7) indicates that in Industrial establishments, Type TC Tray cable that complies with the crush and impact requirements of Type MC (Metal Clad) cable and is identified for such use with the marking Type TC-ER shall be permitted between a cable tray and the utilization equipment or device. The cable shall be secured at intervals not exceeding 1.8 m (6 ft). Please refer to NEC Article 336.10 (7) for more specific information.

Type PLTC-ER: 300V
2008 NEC Article 725.154 (E) (7) indicates that in industrial establishments Type PLTC cable that complies with the crush and impact requirements of Type MC (Metal Clad) cable and is identified for such use shall be permitted to be exposed between the cable tray and the utilization equipment or device. The cable shall be secured at intervals not exceeding 1.8 m (6 ft). Please refer to the NEC Article 725.154 (E) (7) for more specific information.