Dedicated circuit and load for fire bell sprinkler alarm?

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Taryn

Member
Location
Modesto
Occupation
Electrician
Contractor requested we have 120v power source at our manufacturing facility for new fire sprinkler alarms replacing current hydraulic ones. We do in house electrical and controls and I am trying to find out if this needs to be the only load on a dedicated breaker on a dedicated circuit or if I can tap into to a constant power source near by (outlets). Any help or code references to answer this question is welcome. Thanks
 
Taryn said:
Contractor requested we have 120v power source at our manufacturing facility for new fire sprinkler alarms replacing current hydraulic ones. We do in house electrical and controls and I am trying to find out if this needs to be the only load on a dedicated breaker on a dedicated circuit or if I can tap into to a constant power source near by (outlets). Any help or code references to answer this question is welcome. Thanks
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Per NFPA 13 - 2019

16.11.7.2
Sprinkler waterflow alarm systems that are not part of a required protective signaling system shall not be required to be supervised and shall be installed in accordance with NFPA 70, Article 760.

If this is just a flow switch at the main riser, not connected to the fire alarm system, it doesn't need dedicated power. Actually, Potter et al make double switches, so you can send a signal to the fire alarm system AND trip a 120VAC signaling device to indicate water flow. The key is that the signaling device has to be set up so it keeps ringing as long as water is flowing.
 
I usually wire the water flow bell to the same circuit that is feeding the fire alarm control panel or closest booster panel. Either item is on a circuit breaker that has a handle lock.
 
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