Isto é bom desde que eles possam ser unidos de ponta a ponta, sejam identificados para a fiação, ou sejam listados e marcados como uma pista, conforme NEC 410.64. Apenas tenha em mente que as luminárias unidas e end-to-end estão limitadas a um circuito derivado (que deve alimentar uma ou mais luminárias no conjunto) para além do circuito que alimenta a (s) luminária (s) restante (s). p>
410.64 Luminaires as Raceways. Luminaires shall not be used as a raceway for circuit conductors unless they comply with 410.64(A), (B), or (C).
(A) Listed. Luminaires listed and marked for use as a raceway shall be permitted to be used as a raceway.
(B) Through-Wiring. Luminaires identified for through-wiring, as permitted by 410.21, shall be permitted to be used as a raceway.
(C) Luminaires Connected Together. Luminaires designed for end-to-end connection to form a continuous assembly, or luminaires 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 and shall not be required to be listed as a raceway. One additional 2-wire branch circuit separately supplying one or more of the connected luminaires shall also be permitted.
Além disso, no seu caso, conforme 410.21, a luminária deve ser identificada para a fiação em sua caixa de junção integral:
Branch-circuit wiring, other than 2-wire or multiwire branch circuits supplying power to luminaires connected together, shall not be passed through an outlet box that is an integral part of a luminaire unless the luminaire is identified for through-wiring.