The national standard GB50303 clearly stipulates: It is strictly forbidden to lay strong and weak power cables in the same pipe, the parallel spacing must be ≥300mm, and the angle should be ≥60° when crossing to reduce coupling interference. The primary rulebook used in the safe use of cable trays is NEC Article 392. This is a description of how to select, install, and support these metal or plastic frames, on which electrical wires are installed. You should consider it as a series of instructions that make the buildings resistant to. It doesn't sound like you're in the US, but here in US, this is acceptable provided all of the insulation is rated for the highest voltage in the tray. If you have a 480V circuit in the tray, all cables must be insulated for at least 480V regardless of the actual voltage of the circuit. Thats. NEC Article 392 explains cable trays, their components, appropriate wiring methods for cable trays, and instances where they are and are not permitted for use. NEC Article 392 governs cable tray installations, covering tray types, fill. Strong current cables carry high voltage and high current of 220V and above, and are responsible for driving power equipment such as lighting and air conditioning; while weak current cables transmit voice, data and control signals below 36V, building information channels for smart homes and.
