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24 VDC AUX POWER

414 Views 5 Replies 4 Participants Last post by  eddy current
Hi,

Are you allowed to double up wires on the 24 VDC Auxiliary Power in a Fire Alarm panel?

Will this pass verification?

Thanks!
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Power distribution and controls
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Sorry I do not understand what your trying to convey.
Surely you know the rules about parallel conductors.
 

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Discussion Starter · #4 ·
It can be used for more than one device but there are limits. What are you trying to power with the AUX 24 volts?
There is an ice cube relay already powered by the FA panel for the 120VAC dampers and will need another source of 24VDC AUX PWR for the sounder base for the smoke devices.

My question is if you have to connect the aux power on the load side (via relay A1 & A2 coils) or can you directly wire in the aux power and have 2 wires in each terminal of the FA Panel to feed 2 different devices in parallel?

Thanks.
 

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Retired Low Voltage installer (Fire, Access, Security)
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Not familiar with Canadian codes, but sounder bases are notification appliances and powered from the bell/horn/chime circuit in the panel (or bell booster). Wiring and supervision would follow the rules for any bell circuit. So no paralleling unless specifically allowed by the manufacturer.
 

· Light Bender
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The manufacturer will specify if you can parallel off the aux 24 volts but my guess is no, you can’t.
More importantly, you will need to supervise the 24 volts For the sounder bases. Easy way to supervise the 24 volts is with an end of line relay.
 
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