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Question:

Heavy gauge cable on smoke detector circuit, why?

I'm looking to add a new smoke detector to my existing hard-wired circuit. It is on a 15A circuit which also powers a few light fixtures. The weird thing is, all the existing smoke detectors are fed by NM-8 cable, which is obviously much heavier than you would need for a 15A circuit. Why would this be? Any reason I can't just tie in with some 14/3 Romex to run to my new smoke detector?

Answer:

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Be proactive when you go back and ask to talk with the mgr. Explain that the night you were asked to go you could not as your mom was driving and you do not, but let them know you would be willing to go if you knew in advance they needed you to arrange it. I don't know if you explained anything to the mgr or not but explaining why you could not go then would have maybe eased the situation
The hydrant must have full access on all sides (for the firemen and their hoses) a minimum of 3 and more often 5 feet in all directions. You may be able to angle a fence behind the hydrant. You need to contact your municipality for regulations in your area. There will also be a height restriction on your fence especially around the corner, often less than 30 inches. Do so calling.
When you bought the house, you would have gotten a survey done. Check the papers. It will tell you where your property lines are. You may build your fence anywhere inside those lines.

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