400.7 Flexible Cords and Cables. Uses Permitted.

The inlet, the receptacle outlet behind the TV, and Chapter 3 wiring method, including the flexible cord and fittings, shall be a listed assembly specific for this application.

Flexible Cord Issues - ECN Electrical Forums

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Electrical - Flexible Cords Occupational Safety and Health Administration

Flexible Cords, Cables and Fixture Wire

This DIY trick to hide wires, smh. : r/electricians

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NEC 2014 Code Changes Update

electrical - Extension cord and power strip safety - Home Improvement Stack Exchange

Chapter 4 Equipment for General Use: Equipment for General Use, Alabama Electrical Code 2014

Nec and oesc-4

Extension Cords vs. Flexible Cords and Cables