![]() Whatever the reasons for not using wire nuts, not using wire nuts is a more stringent requirement, and being more stringent, the requirement prevails.Īt this point I assume the wires are already installed in the building. (Many times, as a fire alarm service technician, I've had to find and fix these problems.) ![]() Maybe the wire nuts were not tightened enough, maybe one of the wires wasn't quite under the nut. My guess is that several times the AHJ has run into systems with wire nuts, where the wire nuts were badly installed. That's the motivation of the AHJ with the fire department. Keep in mind that the fire marshal or fire inspector is trying to keep people and property safe. The comments also go on to say that if there is a conflict between the NFPA Code and what any of these AHJ's say, the more stringent requirements will prevail. In the comments written by the NFPA (you need the Handbook to get the comments) installers have to listen to all of these AHJ's. I'm paraphrasing, but in essence, the NFPA Code, in their definitions, defines the Authority Having Jurisdiction as each of these. The AHJ is the government's representative - the fire marshal or fire inspector, the insurance company's representative - the insurance inspector, the building owner - the architect and engineers with the overall design of the fire alarm system, and so on. We'll start out with just who is the Authority Having Jurisdiction (AHJ). No government can overrule that practicality, and you need to know what the NFPA is saying to make a safe fire alarm system.ĭoes the Authority Having Jurisdiction (AHJ) have the Authority to Add to the Code? However, if anyone installing a fire alarm system does less than the minimum shown in the guidelines, from a practical point of view, the fire alarm system isn't safe. The published codes aren't law, the published codes don't cover everything, and by themselves, the published codes are books. It's guidelines published by a non-profit organization showing the absolute minimum requirements needed to make a safe fire alarm system. The other part of the answer shows what the NFPA Code really is. I have not seen any place in the "Code" that doesn't allow wire nuts inside of junction boxes for fire alarm systems. Does the Authority Having Jurisdiction (AHJ) have the Authority to not allow wire nuts to be used in the junction boxes?.Does the National Fire Prevention Association, in NFPA72 or the NEC (National Electrical Code) allow wire nuts to be used to connect wires together inside a junction box for Class A or Class B wiring?.Rephrased it looks like the questions are:
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