To Whom it May Concern,
I have spent 40 years in the fire protection and life safety industry, 35 years in the private sector installing fire alarm systems and the last 5 years in the public sector inspecting and accepting them. My goal with this email is to establish a uniformed understanding of what is “compliance” related to the installation of the infrastructure (i. e. wiring, boxes, raceways & enclosures) for the installation of a “Protected Premises Fire Alarm System”
Article 300 - Wiring Methods and Materials
Article 725 - Class 2 & Class 3 Power Limited Circuits
Article 760 – Fire Alarm Systems
Article 800 – Communications Systems
The influence of singular statements contained in both 725 and 760, may be contributing to the uncertainty?
“Only those sections of Article 300 referenced in this article shall apply”
Does the definition “Exposed (as applied to wiring methods)” apply to fire alarm systems wiring?
If so, is the cavity above a suspended ceiling considered exposed?
Does 300.4 items (A), (B), (C), (E) and/or (F) apply to fire alarm systems wiring?
Does 314.16, items (A) and/or (B) apply to fire alarm systems wiring?
Does 314.17, items (A), (B) and/or (C) apply to fire alarm systems wiring?
Assuming the manufacture of the fire alarm equipment devices & appliances require a mounting box and/or enclosure, do any of the following apply?
Does 314.19 apply to fire alarm systems devices or appliances?
Does 314.23, items (A), (B), (C) and/or (D) apply to fire alarm systems devices or appliances?
Does 314.24, item (5) apply to fire alarm systems devices or appliances?
Is it presumed the jacket of the non-metallic sheathed cable prescribed in Article 760 will provide enough protection the reason none of the above are cited in Articles 725 and 760?
How much influence should be given to?
Mechanical execution of work
Neat & workmanlike manner
Protection from physical damage
Best engineering practices