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Outdoor Junction Box Wiring ?
Hello:
Regarding those Bell electrical outdoor junction boxes: Want to put up an outdoor light on the outside of the house. NM wire would be coming thru house siding into one of these junction boxes. The part of the box that will be laying against the siding has a threaded hole for the wire (or some other fitting) to go thru. It's a pretty rough thread. Questions: a. Is it Code required that the NM wire from the house side be clamped where it enters this type of box ? b. If so, should I use one of those NM wire fittings that one uses with the regular indoor metal junction boxes that clamps the wire, as well as providing a threaded section on the other end ? c. Or, just lead the NM into the box and live with it brushing against the internal threaded hole of the box ? (do they make a bushing for this purpose; couldn't find anything appropriate at HD ?) d. Or,... ? Thanks, B. |
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"Robert11" wrote in message ... Hello: Regarding those Bell electrical outdoor junction boxes: Want to put up an outdoor light on the outside of the house. NM wire would be coming thru house siding into one of these junction boxes. The part of the box that will be laying against the siding has a threaded hole for the wire (or some other fitting) to go thru. It's a pretty rough thread. Questions: a. Is it Code required that the NM wire from the house side be clamped where it enters this type of box ? Yes b. If so, should I use one of those NM wire fittings that one uses with the regular indoor metal junction boxes that clamps the wire, as well as providing a threaded section on the other end ? Yes a romex connector or sometimes called a two screw connector will thread into the hole c. Or, just lead the NM into the box and live with it brushing against the internal threaded hole of the box ? (do they make a bushing for this purpose; couldn't find anything appropriate at HD ?) B. |
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On Fri, 9 Sep 2005 11:13:25 -0400, "Robert11" wrote:
Hello: Regarding those Bell electrical outdoor junction boxes: Want to put up an outdoor light on the outside of the house. NM wire would be coming thru house siding into one of these junction boxes. The part of the box that will be laying against the siding has a threaded hole for the wire (or some other fitting) to go thru. It's a pretty rough thread. It is a standard 1/2" female NPT thread. Questions: a. Is it Code required that the NM wire from the house side be clamped where it enters this type of box ? Yes. Any time a cable enters a box, it must be secured (clamped). b. If so, should I use one of those NM wire fittings that one uses with the regular indoor metal junction boxes that clamps the wire, as well as providing a threaded section on the other end ? No. What you want is a 1/2" UF connector. They are available at HD. The manufacturer is Halex. P/N 90661. Bar Code # 5411 90661. Using a "standard" ROMEX connector would allow water to enter the box. c. Or, just lead the NM into the box and live with it brushing against the internal threaded hole of the box ? (do they make a bushing for this purpose; couldn't find anything appropriate at HD ?) Se answer to "b", above. d. Or,... ? Thanks, B. ____________________ Bill Waller New Eagle, PA |
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