Issues with cable routing for instrument installation
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During the construction of a new installation, in the cabinet room, can the power cables that run from the power distribution cabinets to various terminal cabinets and system cabinets, at 220VAC, be installed in the same trunking as the signal cables? There are also optical fibers and Ethernet cables – can they be routed in the same conduit as 220VAC power cables? Are there any regulatory requirements for this?
SHT 3019-2016 Code for Design of Instrumentation and Pipeline Systems in Petrochemical Industries
They can’t be in the same slot box; they need to be separated.
How to divide it? Set up separate cable trays, or what? But in most locations, you just go to one place.
The conduit for signal cables and that for power cables need to be installed separately, one for each type.
This is a problem that often arises during on-site construction. The regulations require that these tasks be carried out separately, but it’s very difficult to do so in practice. Everyone understands just how stressful and rushed things are on site, with constant pressure to hurry, haha. In the end, we went together after all... But in the end, driving didn’t cause any issues, as the 220V AC current indicated on the gauge was still within limited limits……
If there are many 220V AC cables, it is recommended to separate them; however, it’s fine to have just one or two cables together, as long as the shielding is properly grounded. In practice, having just one or two cables does not cause any problems. Moreover, in a factory, 220V is generally used only to power small devices; if it’s a power cable, three phases are definitely required
With proper shielding, there should be no major issues.