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When is a Cable Tray a Raceway? - Mike Holt's Forum
https://forums.mikeholt.com/threads/when-is-a-cable-tray-a-raceway.99389/
It is semantics, but "cable tray" con't be a raceway, wireway and surface metal reaceway can. If you can comply with 376, then it is a wireway and OK, If it is listed as surface metal raceway then it can. eric9822 Senior Member Location Camarillo, CA Occupation Electrical and Instrumentation Tech Nov 2, 2012 #6
What is the difference between raceway and cable tray?
https://askinglot.com/what-is-the-difference-between-raceway-and-cable-tray
Cable tray is classified by the NEC (NFPA 70 the National Electrical Code) as a support system and not as a raceway. Generally speaking raceway completely encloses the cable inside of it. Similarly, what is the difference between raceway and conduit? Conduit is the tube or trough for protecting electric wiring.
Raceway and cable tray, which to choose? - Tekima
https://www.tekima.com/en/raceway-and-cable-tray-which-to-choose/
The cable trays, according to Art. 392.2 of NFPA 70 (NEC) and Art. 3.3.15 of NFPA 79, are unit or assembly of units or sections and associated fittings forming a structural system used to securely fasten or support cables and raceways.
Raceways vs. Cable Trays | Mike Holt's Forum
https://forums.mikeholt.com/threads/raceways-vs-cable-trays.4344/
No. Cable tray is a supporting means for cables and raceways. B brannen Member Location Charlotte, NC Jun 3, 2005 #3 Re: Raceways vs. Cable Trays So, a raceway is a coduit of one form or another - EMT, ENT, etc? A cable tray is like basket tray - I'm thinking of the trays holding LAN cables which look like skeletal rib cages.
What is Cable Raceway and When Should You Use It?
https://www.cableorganizer.com/learning-center/articles/what-is-a-raceway.html
But, as Wikipedia tells us, raceway can also refer to a “ surface mounted wire moulding ”. Maybe that doesn't clear it up very much, but basically what it refers to is a channel to run cables through, that mounts on a wall, or a desk, or some other surface, concealing wires or cables so your set-up looks nice and pretty.
Conduit or Cable Tray? - EC&M
https://www.ecmweb.com/construction/article/20891194/conduit-or-cable-tray
However, cable tray is one exception that is not considered a “raceway” as defined by the NEC because cable tray is an “open” structural system that does not enclose the cable.
Is cable tray considered free air? - AskingLot.com
https://askinglot.com/is-cable-tray-considered-free-air
Cable tray is classified by the NEC (NFPA 70 the National Electrical Code) as a support system and not as a raceway. Generally speaking raceway completely encloses the cable inside of it. Secondly, how is cable tray fill calculated? The sum of the cross sectional areas of all cables cannot exceed 50% of the trays fill area.
Article 100 Free Air (as applied to conductors).
https://www.electricallicenserenewal.com/Electrical-Continuing-Education-Courses/NEC-Content.php?sectionID=787.0
Open or ventilated environment that allows for air flow around an installed conductor with no other conductors closer than one cable diameter and no insulation or building materials in contact with the conductor insulation for more than 75 mm (3 in.) for every 3 m (10 ft) of conductor.
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