San Jose SHARK
New member
When installing a power pack for a motion detector, are the 24 volt splices made on the secondary side of the power pack required to be in a junction box? I have looked over the code and section 300.15 of the 2005 NEC seems to apply. But I cannot find anything specifically that says you MUST have those splices in a j-box, conversely I cannot find anything that says they do not have to be in a j-box.
To further inform you of what is going on, the power pack has a 1/2" nipple on the primary side for installing into the side of a j-box. This allows for the 120 volt or 277 volt wiring to be spliced inside the j-box, as would be expected. This also leaves the 24 volt low voltage wiring on the outside of the j-box. Typically we have spliced "in free air", above the t-bar ceiling (not used as a plenum) and run the wiring to the actual motion detector device. An inspector is calling for the splices at the power pack to be inside a j-box but cannot cite a code section. I would very much appreciate if someone could cite a specific code section that would settle this correctly. Thanks,
To further inform you of what is going on, the power pack has a 1/2" nipple on the primary side for installing into the side of a j-box. This allows for the 120 volt or 277 volt wiring to be spliced inside the j-box, as would be expected. This also leaves the 24 volt low voltage wiring on the outside of the j-box. Typically we have spliced "in free air", above the t-bar ceiling (not used as a plenum) and run the wiring to the actual motion detector device. An inspector is calling for the splices at the power pack to be inside a j-box but cannot cite a code section. I would very much appreciate if someone could cite a specific code section that would settle this correctly. Thanks,
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