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Wednesday, June 10, 2026

Lighting Junction Box Kits


Lights Wiring With Junction Boxes

Don't wish for something less intrusive, somehow just finding wires at-hand that enable screw attachment of a surface-mount luminaire. Pulling wires demands at least the access of a forearm at most wished light positions. Then, know that joist interference is usually avoidable. Want the freedom to place a light anywhere distant from a joist. Do not prefer that lighting is only placed before ceiling drywall. Want freedom to place lighting with limited access to ceilings including an attic floor.

Want this box to be sealed airtight in the ceiling for a purpose including blockage of bugs that would be drawn to any lighting leakage above a luminaire. 

Opportunities for junction-box-mounted LED lighting include the replacement of a can light or a clip-in edge light. There, place the junction box in a patch ideally employing the divot of the found luminaire. Hope that a thoughtful person had placed the divot nearby above the ceiling.  We must learn that lighting will be replaced with new technology and style, over time. Let that presumption be stated in building code!



There is no economy in using boxes 1 1/2" deep. For ceiling lights wiring, prefer a RACO 175 box, 2 1/8” deep, offering ability to securely capture wires that enter the box, from within the box. Find no reason to electrically ground this box. Where this ubiquitous box is designed for capture of jackets of heavy Romex cables, let there be imtermediate jackets that surround and restrain cables much smaller than 14/2 Romex. Wish further that, as in Japan, lighting wire cables should not include ground wires. Absent ground wires, metal lighting device safety is preserved if a circuit has ground-fault circuit breaker protection. A grounded junction box is only a maintenance hazard, where there are temptations to move energized wires as in replacement of a switch else in room darkness.

Here is a new ceiling cut or an opening provision in a ceiling patch kit.






As a cut through textured ceiling drywall, the divot is valuable for the freedom to reconsider lighting positions, then resetting the divot and gouting it in, invisible. Practice and expect to find, placement of a divot near the hole, atop the drywall.
















A kit tips into place easily with 2x8 framing. Bevel cuts help.



Here is a junction box kit including patch-out of a can light. 


























A RACO 175 kit with a can light patch ring can be inserted even within the 5.5" space of 2x6 framing. With kits, a luminaire upon junction box may be placed as remodel anywhere with box center more than 1 3/4" from the face of a joist. Joists must not be notched for insertion of a junction box. With evolving lights technology, expect that most lights will be installed as retrofits. Rarely, want to fit ceiling drywall to accommodate preset junction boxes.

Where a new luminaire doesn't cover a patch, be prepared to duplicate the found ceiling texture. Learn to achieve this with the grout material. Any texture detail is easy with my kitchen-compounded Flexible Grout . At the link please find mention of readily-available Custom Fusion Pro grout as an alternative to the grout material invented by my twin brother, Paul Norman. Paul's grout material has many other uses due to its sandability and formability as any kind of texture.


























Luminaire replacement needs include rectangular patches. Here an over-sink light bulb luminaire box was with very thick texture upon a ceiling with electric radiant heat. For each opportunity, choose appropriate wood scraps to achieve the patch and ceiling alignment.










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