As far as the neutrals I would call it a violation of 200. Pigtailing two neutrals only works if you're sure the two circuits are powered by opposite lines, so the pigtail only carries the difference current and not additive current. Pigtails act as bridges, allowing you to connect. This study was conducted in response to State transportation departments' requests to develop improved design guidance for mitigation of excessive cable vibrations on cable-stayed bridges. There was probably 5 of these pigtails in the panel. He also twisted a few of the ground wires together and crimped them under a crimp sleeve, then ran a single wire underneath. This article offers an in‐depth guide for electricians tasked with wiring for bridge cable-stayed systems, emphasizing safety, precision, and the role of business intelligence and data analytics in optimizing these critical projects. You are required to have a neutral in a switch box now (at least in canada) because with new switches with electronics in them, like.