access floor cabling

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jimbob

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Is it an NEC requirement to install branch circuits to server racks in an IT Room in cable tray if they are routed below an access floor? That is the way that I read article 645, but I see so many installations where the cable is laid directly on the subfloor.
 
Re: access floor cabling

Check 645.5(D)(2) closely. If they're meeting the support requirements of 300.11, you could put them on the (sub)floor.
 
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