NFPA 731 Section 4.6.3.1 requires the installation of all wiring, cable, and equipment to be performed in accordance with NFPA 70 (NEC), Article 725 or Article 800, where applicable.

One requirement in NEC^® 725.21 and 800.21 is that access to electrical equipment shall not be denied by an accumulation of wires and cables that prevents removal of panels, including suspended ceiling panels. Another requirement in NEC^® 725.24 and 800.24 is for cables and circuits to be installed in a neat and workmanlike manner.

Below is a sample of NFPA 731. For the complete section, see the actual NFPA 731 text at NFPA.ORG. Once there, click on the free access link to the latest edition of NFPA 731.

4.6.3 Wiring.

4.6.3.5 Premises security system wiring and cables shall be of the gauge, strands, insulation, and electrical properties specified by the equipment manufacturer.

4.6.3.6 Connections of conductors to terminal parts shall ensure a tight, conductive connection without damaging the conductors and be made by means of pressure connectors, wire binding screws, or splices to flexible leads.

4.6.3.7 Conductors shall be connected to devices and to fittings so that tension is not transmitted to joints or terminals.

4.6.3.8 Wires and cables shall not be placed in such a manner as to prevent access to equipment.

Below is a sample of the NEC^®. See the actual NEC^® text at NFPA.ORG for the complete code section. Once there, click on their link to free access to the latest NEC^® edition of NFPA 70.

725.21 Access to Electrical Equipment Behind Panels Designed to Allow Access. Access to electrical equipment shall not be denied by an accumulation of wires and cables that prevents removal of panels, including suspended ceiling panels.

725.24 Mechanical Execution of Work. Class 1, Class 2, and Class 3 circuits shall be installed in a neat and workmanlike manner. Cables and conductors 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 supported by straps, staples, hangers, cable ties, or similar fittings designed and installed so as not to damage the cable. The installation shall also comply with 300.4(D).