Fire alarm circuit 20A

[hhsting]

I have landlord space where there are 208/120V three phase panelboard one of which feeds fire alarm circuit.

Does fire alarm circuit require emergency backup fed from 20A 120V?

 

[mtnelect]

Most Fire Alarm panels have their own battery backup to supply power for at least 3 hours, like emergency exit signs lights.
Also, this circuit was to be kept completely independent from other circuits, I believe it was Section 700.10 (B).

 

[hhsting]

Most Fire Alarm panels have their own battery backup to supply power for at least 3 hours, like emergency exit signs lights.
Also, this circuit was to be kept completely independent from other circuits, I believe it was Section 700.10 (B).

This is not fire alarm panel. Its regular 208/120V panelboard supplying fire alarm in commercial setting??

 

[mtnelect]

This is not fire alarm panel. Its regular 208/120V panelboard supplying fire alarm in commercial setting??

No, it doesn't ... But per Section 760.41(A) a breaker handle lock needs to be installed to prevent it from being accidentally turned off. Also, the electrical panel should be accessible only to authorized personnel.

 

[gadfly56]

No, it doesn't ... But per Section 760.41(A) a breaker handle lock needs to be installed to prevent it from being accidentally turned off. Also, the electrical panel should be accessible only to authorized personnel.

The 2017 edition says that the circuit "may be permitted to be secured in the "on" position". It does not require it. However, NFPA 72-2016 does require a lock, under 10.6.5.4. Also, you should probably be looking under 760.121 for power-limited fire alarm circuits. 760.41 is for non-power limited fire alarm circuits, which are much less common theses day.

 

[don_resqcapt19]

The fire alarm panel is required to have a primary and secondary power supply. Often the secondary power supply is batteries that are part of the fire alarm panel. If the panel has batteries, they must be able to supply the panel for at least 24 hours and at the end of that time be able to operate the alarm indicating devices for at least 5 minutes.

 

[hhsting]

The fire alarm panel is required to have a primary and secondary power supply. Often the secondary power supply is batteries that are part of the fire alarm panel. If the panel has batteries, they must be able to supply the panel for at least 24 hours and at the end of that time be able to operate the alarm indicating devices for at least 5 minutes.

The fire alarm is Not fed from fire alarm panel.

Its fed from regular 208/120V panelboard that also feeds power and light circuits as well

 

[d0nut]

The fire alarm is Not fed from fire alarm panel.

Its fed from regular 208/120V panelboard that also feeds power and light circuits as well

The fire alarm panel everyone is referring to in this thread is the Fire Alarm Control Panel (FACP). It is the brains of the fire alarm system, not the electrical distribution panelboard. The FACP will have a normal power feed from your panelboard and will have batteries that provide the emergency backup for the fire alarm system.

 

[tom baker]

AS dOnut pointed out, this is a fire alarm panel

 

[roger]

The fire alarm panel everyone is referring to in this thread is the Fire Alarm Control Panel (FACP). It is the brains of the fire alarm system, not the electrical distribution panelboard. The FACP will have a normal power feed from your panelboard and will have batteries that provide the emergency backup for the fire alarm system.

Absolutely and it is above the OP's understanding as far as being a plan reviewer. With that said, he should seek some classes before trying to critique or review something he has no knowledge of.

Roger