If you have a national electrical code (NEC)-related problem, are experiencing difficulty in understanding an NEC requirement, or are wondering why or if such a requirement exists, ask Charlie and he will let the Code decide.I'm wondering if a cable tray (under 600V nominal) installed below a nonplenum raised floor is considered exposed and accessible per 392.6(H)? There will also be heating, ventilating and air conditioning (HVAC) supply ducts below the raised floor, so are there special clearance requirements between the ducts and our cable tray?
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