Connecting wiring to fixtures

[Mark Brown]

Doesn't the code require that if a fixture is used as the Junction box for the feed wiring the conduit or cord should be attached to the fixture or else a j-box needs to be installed behind the fixture. If this is true does anyone know the code reference, I think it would be in 410 but I can't find it.

 

[gregory]

tap box

tap box

some recessed light fixtures have approved junctions boxes that you can use for branch circuit wiring. some recessed lights require high temperature wiring to them because they don't have a preinstalled junction box. connection to fixture is accomplished by installing tap boxes per 410.67 shown below

410.67 Wiring.
(A) General. Conductors that have insulation suitable for the temperature encountered shall be used.
(B) Circuit Conductors. Branch-circuit conductors that have an insulation suitable for the temperature encountered shall be permitted to terminate in the luminaire (fixture).
(C) Tap Conductors. Tap conductors of a type suitable for the temperature encountered shall be permitted to run from the luminaire (fixture) terminal connection to an outlet box placed at least 300 mm (1 ft) from the luminaire (fixture). Such tap conductors shall be in suitable raceway or Type AC or MC cable of at least 450 mm (18 in.) but not more than 1.8 m (6 ft) in length.

 

[celtic]

Doesn't the code require that if a fixture is used as the Junction box for the feed wiring the conduit or cord should be attached to the fixture or else a j-box needs to be installed behind the fixture.

Not exactly....

410.11 Temperature Limit of Conductors in Outlet Boxes.
Luminaires (fixtures) shall be of such construction or installed so that the conductors in outlet boxes shall not be subjected to temperatures greater than that for which the conductors are rated.
Branch-circuit wiring, other than 2-wire or multiwire branch circuits supplying power to luminaires (fixtures) connected together, shall not be passed through an outlet box that is an integral part of a luminaire (fixture) unless the luminaire (fixture) is identified for through-wiring.
FPN:See 410.32 for wiring supplying power to fixtures connected together.


410.32 Wiring Supplying Luminaires (Fixtures) Connected Together.
Luminaires (fixtures) designed for end-to-end connection to form a continuous assembly, or luminaires (fixtures) connected together by recognized wiring methods, shall be permitted to contain the conductors of a 2-wire branch circuit, or one multiwire branch circuit, supplying the connected luminaires (fixtures) and need not be listed as a raceway. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires (fixtures) shall also be permitted.