NFPA 731 Equipment Installation.

Unless the room is air conditioned, rooms like this might be a bad place to install security annunciators or monitoring equipment due to the excessive heat from the dry-type transformers present in the room.
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Unless the room is air conditioned, rooms like this might be a bad place to install security annunciators or monitoring equipment due to the excessive heat from the dry-type transformers present in the room.

NFPA 731 Section 4.4.6.2 is all about properly installing the security equipment in a manner where the equipment will be protected from failure due to things like accidental jarring, vibration, over voltage, excessive temperatures, and humidity. Also see Section 4.2.

An example of a bad place to install a premises security control panel or monitoring equipment is the main electrical room where the room may be subject to excessive heat from nearby transformers or other equipment. See below for additional details.

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.

4.4.6.2 Equipment.

4.6.2.1 Devices, appliances, and control units shall be located and mounted so that accidental operation or failure is not caused by vibration or jarring.

4.6.2.2 Unless otherwise permitted by the manufacturer, control units, power supplies, and batteries shall be mounted in the vertical, upright position.

4.6.2.3 All equipment requiring manual resetting to maintain normal operation shall have an indication to the user that the device has not been restored.

4.6.2.4 Equipment shall be installed in locations where conditions do not exceed the voltage, temperature, and humidity limits specified in 4.5.5 unless listed for the application.

4.6.2.5 Control units and subcontrols shall be accessible to service personnel.

4.6.2.6 To reduce the possibility of damage by induced transients, circuits and equipment shall be protected in accordance with the requirements of NFPA 70.

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NFPA 731 Equipment Installation.

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

Which of the following is true regarding security equipment?

A: Security control units, power supplies, and batteries must be mounted in the horizontal, position.
B: Control units and subcontrols shall be accessible to service personnel.
C: Devices subject to vibration or jarring shall be located and mounted so that accidental operation of the equipment is ensured.
D: All equipment requiring automatic resetting shall have an indication to the user that the device has been restored.
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