Você pode abrir uma caixa de junção de plástico e colocar emendas?

Festa tag vermelha, alguém?

Hoo boy, esse instalador precisa ser mandado de volta para a escola com um Codebook! O que está nas fotos sozinha viola várias seções do NEC, começando com 314.17 (A) nas aberturas excessivas para condutores:

(A) Openings to Be Closed. Openings through which conductors enter shall be closed in an approved manner.

Em seguida, passamos para o 314.23, onde a total falta de suporte à caixa afeta:

314.23 Supports. Enclosures within the scope of this article shall be supported in accordance with one or more of the provisions in 314.23(A) through (H).

Observe que em nenhum lugar das subseções é permitido que uma caixa se solte em alguma isolação, suportada apenas por cabeamento que não é aliviado para a caixa por um meio aprovado (como uma empunhadura de cabo).

Observe também as tampas da caixa de abaulamento, que são indicativas de uma violação das disposições gerais do 314.16:

314.16 Number of Conductors in Outlet, Device, and Junction Boxes, and Conduit Bodies. Boxes and conduit bodies shall be of an approved size to provide free space for all enclosed conductors. In no case shall the volume of the box, as calculated in 314.16(A), be less than the fill calculation as calculated in 314.16(B). The minimum volume for conduit bodies shall be as calculated in 314.16(C).

The provisions of this section shall not apply to terminal housings supplied with motors or generators.

Informational Note: For volume requirements of motor or generator terminal housings, see 430.12.

Boxes and conduit bodies enclosing conductors 4 AWG or larger shall also comply with the provisions of 314.28.

De lá, continuamos a festa em 300.11 (A) no suporte:

300.11 Securing and Supporting.

(A) Secured in Place. Raceways, cable assemblies, boxes, cabinets, and fittings shall be securely fastened in place. Support wires that do not provide secure support shall not be permitted as the sole support. Support wires and associated fittings that provide secure support and that are installed in addition to the ceiling grid support wires shall be permitted as the sole support. Where independent support wires are used, they shall be secured at both ends. Cables and raceways shall not be supported by ceiling grids.

e siga para 300.3 (A) e (B) para os fios soltos soltos no sótão:

300.3 Conductors.

(A) Single Conductors. Single conductors specified in Table 310.104(A) shall only be installed where part of a recognized wiring method of Chapter 3.

Exception: Individual conductors shall be permitted where installed as separate overhead conductors in accordance with 225.6.

(B) Conductors of the Same Circuit. All conductors of the same circuit and, where used, the grounded conductor and all equipment grounding conductors and bonding conductors shall be contained within the same raceway, auxiliary gutter, cable tray, cablebus assembly, trench, cable, or cord, unless otherwise permitted in accordance with 300.3(B)(1) through (B)(4).

Finalizando as coisas, podemos escrever o instalador para violar 110.12, incluindo 110.12 (A) especificamente:

110.12 Mechanical Execution of Work. Electrical equipment shall be installed in a neat and workmanlike manner.

Informational Note: Accepted industry practices are described in ANSI/NECA 1-2010, Standard Practice of Good Workmanship in Electrical Construction. and other ANSI- approved installation standards.

(A) Unused Openings. Unused openings, other than those intended for the operation of equipment, those intended for mounting purposes, or those permitted as part of the design for listed equipment, shall be closed to afford protection substantially equivalent to the wall of the equipment. Where metallic plugs or plates are used with nonmetallic enclosures, they shall be recessed at least 6 mm (1/4 in.) from the outer surface of the enclosure.

Na minha jurisdição, o proprietário (e seu contratante) é responsável por garantir que não haja violações do código de incêndio e do código de construção, incluindo código elétrico, independentemente de alguém inspecionar antes de uma catástrofe.

NFPA 70 (2014):

110.3 (B) Installation and Use. Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.

110.12 Mechanical Execution of Work. Electrical equipment shall be installed in a neat and workmanlike manner.... (B) ...There shall be no damaged parts that may adversely affect safe operation or mechanical strength of the equipment such as parts that are broken; bent; cut; or deteriorated by corrosion, chemical action, or overheating.

314.17:

Conductors Entering Boxes, Conduit Bodies, or Fittings. Conductors entering boxes, conduit bodies, or fittings shall be protected from abrasion and shall comply with 314.17(A) through (D).

(A) Openings to Be Closed. Openings through which conductors enter shall be closed in an approved manner.

(C) Nonmetallic Boxes and Conduit Bodies....Where nonmetallic sheathed cable or multiconductor Type UF cable is used, the sheath shall extend not less than 6 mm (1⁄4 in.) inside the box and beyond any cable clamp. In all instances, all permitted wiring methods shall be secured to the boxes.

No entanto,

Exception: Where nonmetallic-sheathed cable or multiconductor Type UF cable is used with single gang boxes not larger than a nominal size 57 mm × 100 mm (21⁄4 in. × 4 in.) mounted in walls or ceilings, and where the cable is fastened within 200 mm (8 in.) of the box measured along the sheath and where the sheath extends through a cable knockout not less than 6 mm (1⁄4 in.), securing the cable to the box shall not be required. Multiple cable entries shall be permitted in a single cable knockout opening.

Eu duvido que o corte ou perfuração de seus próprios furos em uma caixa listada e rotulada (como mostrado na sua situação) conte como "um knockout de cabo", assim a exceção não se aplica. Além disso, algumas das fotos mostram caixas mais do que "única gangue", nem são qualquer um deles "montado em paredes ou tetos", se eles são mostrados em espaços sótão inacabadas.

O mais provável é que estas sejam emendas esticadas, torcidas / adicionadas em cabos cortando-as. Isso significa que não há o comprimento de fio livre necessário na caixa.

300.14 Length of Free Conductors at Outlets, Junctions, and Switch Points. At least 150 mm (6 in.) of free conductor, measured from the point in the box where it emerges from its raceway or cable sheath, shall be left at each outlet, junction, and switch point for splices or the connection of luminaires or devices. Where the opening to an outlet, junction, or switch point is less than 200 mm (8 in.) in any dimension, each conductor shall be long enough to extend at least 75 mm (3 in.) outside the opening.

Seria um trabalho real resolvê-lo corretamente, mas certamente menos trabalho do que tudo o que hacking e recheio . Este eletricista simplesmente não tinha confiança ou experiência. Eu teria algumas caixas de metal quadradas de 4 "ou 4-11 / 16" (porque é nisso que eu trabalho), coloque-as inteligentemente para tentar incluir 2 dos 3 cabos com comprimento disponível, então execute o novo Romex para substituir o terceiro .

Pegue a segunda foto, um dos três cabos vai direto para baixo, eu desmontei para preservar cada centímetro desse cabo, fazer esse cabo fazer uma entrada traseira em uma caixa quadrada de 4 ", então provavelmente terá que sacrificar os outros dois.