Boxes can be made of metal or plastic and you usually screw or nail them to a stud or rafter although you can anchor remodeling boxes directly to the surface of drywall.
Large junction box in attic.
Some areas might allow for junction boxes that don t penetrate ceiling drywall.
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The same basic national electric code or nec rules apply.
If you come across a wire or romex cable that nee.
An experienced electrician may have to install a larger box or stack another box on top in order to enclose all the wire connections in the junction box with a cover.
Missing junction box in attic electrical connections made improperly can be vulnerable to sparking and creating a fire.
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With a junction box you can power different electrical necessities at the same.
Even if the insulation doesn t create a fire hazard or render the box.
For example the back of a junction box in an attic that opens into the ceiling should remain free of attic insulation.
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In this video i show you how to mount and install an electrical junction box.
Installing an electrical junction box or j box in the attic is not much different from installing a j box anywhere else.