Issue of clear distance for instruments/cable trays
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As the title suggests, after reviewing relevant standards, it can be seen that provisions are only made for instrument/cable trays, hot pipes, pipes carrying corrosive media (as well as Class B pipes as specified in GB50316). What about other types of pipes? Right, for other types of pipes, as long as the horizontal clearance or the crossing elevation does not conflict with the cable tray, is that sufficient? On-site, what is the approximate clear distance that makes it easier to lay cables? Thank you all!
There is a table in the training materials for the registered electrical engineer exam; generally, the clear distance between pipes and cable trays when they run parallel to each other is 300, while the clear distance when they intersect is also 300. This distance increases to 400 in cases where there is a risk of corrosion or flammability, and to 500 in cases where insulation is involved