Residential Fire sprinklers power

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realboss

Electrical Contractor
Location
Arizona
Occupation
Owner
Do any of you know where in the code I would find the requirements for feeding a sprinkler flow switch? We have always feed off a generail lighting circuit so if it was to ever trip or be turned off you would know. We have an inspector that is telling us it must be on a dedicated circuit, with a braeker locker locked on.
 
Re: Residential Fire sprinklers power

I've never seen a flow switch used in residential so I have to assume it is connected to a local alarm. I would think then that it would follow the same local requirements as smokes as to how they want them powered.

-Hal
 
Re: Residential Fire sprinklers power

You would install a flow switch in the normally closed posistion so that if you have water flow through it, it rings a bell. I need to know is the code specific in how to feed power and if it is required to be on a dedicated circuit or can it be feed off any general lighting circuit.
 
Re: Residential Fire sprinklers power

The inspector should cite the code article that you've violated. Did he say that it was an NEC violation or an NFPA-72 violation?
 
Re: Residential Fire sprinklers power

He says the NEC refers to the NFPA-72, so Im not sure exactly what that states but I think he is confusing a sprinker system with a fire alarm system??
 
Re: Residential Fire sprinklers power

I would think this would be a monitored switch. Loss of power should give a trouble signal, or even set off an alarm. Why isn't it fed from the fire alarm panel??

Steve
 
Re: Residential Fire sprinklers power

That's what I was getting at. This is residential, is there even a fire system involved? Or does water flow just trigger a bell through the flow switch?

-Hal
 
Re: Residential Fire sprinklers power

That's what I was getting at. This is residential, is there even a fire system involved? Or does water flow just trigger a bell through the flow switch?
That's what it sounds like to me. A local bell that rings on water flow. Is there any requirement for this alarm? If not, than there should be no requirement for it's power source.
 
Re: Residential Fire sprinklers power

That's what I was getting at. This is residential, is there even a fire system involved? Or does water flow just trigger a bell through the flow switch?
That's what it sounds like to me. A local bell that rings on water flow. Is there any requirement that states that you must have this alarm? If not, than there should be no requirement for it's power source.
 
Re: Residential Fire sprinklers power

Typically this is not a fire alarm system, even though it can be connected to the fire alarm system if there is one.
The requirements for this are found in the building code and does require an individual branch circuit. The flow switch is required to be tied into a bell or horn that is mounted outside of the dwelling. As I mentioned, it can also be tied into the fire alarm system if there is one.
 
Re: Residential Fire sprinklers power

On multiple dwellings we install a flow switch and a tamper alarm but not a lock out for the breaker,kind of self defeating no power no alarm.
 
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