fire alarm

[copper chopper]

can anyone give me code articles on this question...
In commercial enviroment when we run open fire alarm wiring why do we have to have a box for every device if its under 30 volts on horns and strobes and most detectors except duct have only a map or non powered circiiut to it... it would save alot of time and effort on remodeles if we could use those lo voltage cut in rings with the wings o them to mount devices to. Our comm guys can do it and on a telephone line when it rings you can get well over 30 volts on it. I f it is a saftey issue that it has to be in a box why? If the fire starts in the ceiling and the wires burn up, no more device anyway.... and now you have a trouble on the panel....:happysad:

 

[gadfly56]

can anyone give me code articles on this question...
In commercial enviroment when we run open fire alarm wiring why do we have to have a box for every device if its under 30 volts on horns and strobes and most detectors except duct have only a map or non powered circiiut to it... it would save alot of time and effort on remodeles if we could use those lo voltage cut in rings with the wings o them to mount devices to. Our comm guys can do it and on a telephone line when it rings you can get well over 30 volts on it. I f it is a saftey issue that it has to be in a box why? If the fire starts in the ceiling and the wires burn up, no more device anyway.... and now you have a trouble on the panel....:happysad:

You have to use a box because the manufacturer's instructions say to use a box, and the instructions are part of the device's listing. If you can find someone who makes smoke detectors or horn/strobes that don't call for box mounting go for it. I don't know of any, but that doesn't mean there aren't any.

 

[nhfire77]

can anyone give me code articles on this question...
In commercial enviroment when we run open fire alarm wiring why do we have to have a box for every device if its under 30 volts on horns and strobes and most detectors except duct have only a map or non powered circiiut to it... it would save alot of time and effort on remodeles if we could use those lo voltage cut in rings with the wings o them to mount devices to. Our comm guys can do it and on a telephone line when it rings you can get well over 30 volts on it. I f it is a saftey issue that it has to be in a box why? If the fire starts in the ceiling and the wires burn up, no more device anyway.... and now you have a trouble on the panel....:happysad:

IMHO,,, its cross of survivability from being damaged/tampered with intentionally/unintentionally. Its not an electrical safety issue, but a life safety issue.