Wiring Procedures For Fire Alarm Systems (Mod D) Flashcards
(12 cards)
What special cases have their own separate zones?
Air handling systems that require duct type smoke detectors
A shaft (for instance, stair or elevator )
Each contained use area, impeded egress area, or fire compartment
Each sprinkler device, such as flow switch or gate valve must be a separate zone.
In a conventional system, what happens when the control panel goes into trouble, alarm or supervisory conditions?
The zone that caused the condition is annunciated
What’s a conventional fire alarm system?
A fire alarm cct which uses non addressable fire alarm field devices
In a class b conventional cct, how are field devices connected?
In parallel
Every zone has an end of line device connected after the last field device for that zone.
What facilitates the required amount of supervisory current to flow throw the cct in a conventional class b cct?
A resistor
What kind of condition occurs from an open wiring in an NAC wiring of a conventional class B cct?
Trouble condition indicated at the panel
What are tamper devices used for?
Detect is someone is messing with the wiring at sprinkler devices like a flow or gate valve switch.
When the cover is removed and the tamper switch is opened, interrupting the supervisory current, what condition is the system in?
Trouble condition
The overcurrent device used to protect the branch circuit of a FIRE ALARM system must be:
Coloured Red
Clearly and permanently identified
Lockable in the On position
The overcurrent device used to protect the branch circuit for SMOKE and CO that do not contain an integral battery in a dwelling must be:
Clearly and permanently labeled
Connected to a circuit containing lighting loads
What code rule describes the calculation for a conductor supplying a fire pumps?
32-300
