Do all cables used in chemical explosion-proof workshops need to be enclosed in galvanized tubes?
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In the past, in Class A explosion-proof workshops, cables were enclosed in tubes, which made maintenance and inspection difficult. Now we plan to place the cables directly on cable trays – is that acceptable? Is it compliant?
Why doesn’t it meet the requirements? It can’t be that the workshop refuses to provide the channel strips, right?
It’s fine to place the cable tray; however, wires still need to be passed through galvanized tubes when exiting the cable tray
It definitely does not meet the requirements. A cover must be installed at the end of the cable tray, and fireproofing material must be placed when passing through walls. Class A explosion-proof production areas are considered hazardous sources that fall under the **strict supervision category of ‘two key aspects, one major item, and one significant risk’. Routine maintenance is troublesome and leads to unnecessary issues; what’s the point of that? :):):):):):):)
This post was last edited by ytwayy on 2017-1-13 at 18:54. According to the \"Code for Construction and Acceptance of Electrical Installations in Explosive and Fire-Hazardous Environments\", cables can be placed in cable trays； Insulated wires should be enclosed in steel pipes
One issue: when exiting the cable tray, it should be laid inside tubes, and an explosion-proof flexible tube should be used before it reaches the instruments
It’s not an explosion-proof workshop; all cables must pass through galvanized pipes
For Class A workshop buses, cable trays can be used; the cables exiting the trays need to be run through pipes
It is still necessary to follow the standards strictly