I found different AHJs often had diferrent opinions as to what was required, especially concerning residential work. To be safe I would usually wire keypads, sirens and strobe / horns with 18/4 FPL.
I found different AHJs often had diferrent opinions as to what was required, especially concerning residential work. To be safe I would usually wire keypads, sirens and strobe / horns with 18/4 FPL.
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