O disjuntor, exibindo um condutor instalado de fábrica, é aprovado pela UL para seu uso intencional. O código se refere a tais como "condutores tapped" e no campo eles são conhecidos como rabos de porco.
Embora existam muitas regras sobre condutores de derivação, não há nada específico sobre um disjuntor de pólo duplo GFCI em geral que eu possa encontrar
Para fins de comparação, SOMENTE está aqui um artigo de código sobre condutores roscados.
II. Branch-Circuit Ratings
210.19 Conductors — Minimum Ampacity and Size
A (4) Other Loads. Branch-circuit conductors that supply loads other than those specified in 210.2 and other than cooking appliances as covered in 210.19( A)( 3) shall have an ampacity sufficient for the loads served and shall not be smaller than 14 AWG.
Exception No. 1: Tap conductors shall have an ampacity sufficient for the load served. In addition, they shall have an ampacity of not less than 15 for circuits rated less than 40 amperes and not less than 20 for circuits rated at 40 or 50 amperes and only where these tap conductors supply any of the following loads:
(a) Individual lampholders or luminaires with taps extending not longer than 450 mm (18 in.) beyond any portion of the lampholder or luminaire.
(b) A luminaire having tap conductors as provided in 410.117.
(c) Individual outlets, other than receptacle outlets, with taps not over 450 mm (18 in.) long.
(d) Infrared lamp industrial heating appliances.
(e) Nonheating leads of deicing and snow-melting cables and mats.