cable tray
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Should galvanized pipes or other cable trays be used for laying wires in the boiler room?
Either one is fine; choose the option that is most economical
The cable tray can be made of other profiles, while the wire conduit should be galvanized steel
Cable trays are rarely used indoors, unless there are a large number of cables – in which case one or two conduit pipes are not sufficient.
It’s just a few 220V power cables; the rest are signal cables and instrument wires
Any of these will work; the key factor is the number of cables. If there are many, cable trays are definitely the better choice – they save money and improve aesthetics.
The 220V power cable and the instrument cable must not be used in the same cable tray.