Regarding the issue of cable trays entering the control room
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As shown in the diagram, when no explosion protection requirements apply, the control room is on the second floor; if cable trays are to be installed, should they be inserted through openings following the blue line? Should we still proceed in the red-line manner? Or can both methods be used?
The gauge blue line should have a slight downward slope at the top to prevent rainwater from entering. It’s pretty good too. Easy to construct.
It’s highly unlikely that it will be possible. Distinguish between explosion-proof and blast-resistant. Water resistance, blast resistance, feasibility, and reliability all need to be taken into account