That’s second one is what I’m getting hit for…Here are two instances of it at this site:
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Based on the wording of that section, the second instance clearly fails since not a word of the manufacturer's markings is visible. Not sure why they'd even sell something like that... Anyways, I'll need to fix that.
It is pretty unlikely that you are working with a fire alarm system that is covered by that section. Much more likely that 760.121(B) applies, but there is little difference.
10.6.5.1.2* The branch circuit supplying the equipment shall supply no other loads.
10.6.5.2 Circuit Identification and Accessibility.
10.6.5.2.1 The location of the branch circuit disconnecting means shall be permanently identified at the control unit.
10.6.5.2.2* The system circuit disconnecting means shall be marked to identify the system or equipment that it serves.
10.6.5.2.3 For fire alarm and/or signaling systems, the circuit disconnecting means shall have a red marking.
10.6.5.2.4 The red marking shall not damage the overcurrent protective devices or obscure the manufacturer’s markings.
10.6.5.2.5 The circuit disconnecting means shall be accessible only to authorized personnel.
10.6.5.3 Mechanical Protection.
The branch circuit(s) and connections shall be protected against physical damage.
10.6.5.4 Circuit Breaker Lock.
Where a circuit breaker is the disconnecting means, an approved breaker locking device shall be installed.
10.6.5.5 Overcurrent Protection.
An overcurrent protective device shall be provided in accordance with NFPA 70.
I’m just going by the letter..It is pretty unlikely that you are working with a fire alarm system that is covered by that section. Much more likely that 760.121(B) applies, but there is little difference.
Note that NFPA 72, and not the NEC, has purview over these requirements.
Only the red marking is prohibited from obscuring the breaker markings....the red lock-on device is not prohibited from doing that. As long as there is a red marking that does not obscure the breaker markings you are good to go.
There are no dumb questions, a circuit breaker will trip even if locked in the closed or ON position.I can understand why you would want to prevent someone from turning off the fire alarm circuit. But wouldn't the second device (in picture above) prevent it from opening in a ground fault situation? If that's the case, why even have over current protection? Second question, if this is for non power, only fire alarm, do you really need a 20 amp breaker? I'm new, please don't bite my head off if these are dumb questions.
I just have not seen a new fire alarm panel that is covered by 760.41 in the last 30+ years.I’m just going by the letter..
Verify the electrical breaker for the fire alarm control panel is marked red. [2013 NFPA 72 184.108.40.206
and 2017 NPFA 70 760.41(B)7
The project cannot be approved until we receive acceptable
Interesting....."the branch circuit shall not be supplied through AFCI or GFCI".....what about the " if the GFCI/AFCI trips there is something wrong with the circuit" argument?
Agree wholeheartedly..In America, shouldn't I have the freedom do decide that the meat in my chest freezer is subject to the same criteria?