Allamon13
Member
- Location
- Pittsburgh, PA, USA
Hello,
This is my first post and I am a little bit confused on how to interpret some codes...
Currently we have a few 480VAC motors wired with lapp cable which is rated for 600V and is approved for TC-ER. The cable comes out of the tray into a disconnect and then into the motor (secured with cord grips and protecting by a metal framing along with the tray itself. A customer is referencing OSHA 1910.305(G)(1) which states where flexible cords/cables may and may not be used. He is saying that a cable cannot supply power to the motor because it is substituting a fixed wiring method and it must be run through flexible conduit.
The exact reference he is looking at is in osha's 1910.305(G)(1) where it states
I am having a hard time finding examples of installations which a cable is supplying power to a motor. Maybe I have been mislead by the cable being Power and Control cable.
1910.305(a)(3)(i)
This is my first post and I am a little bit confused on how to interpret some codes...
Currently we have a few 480VAC motors wired with lapp cable which is rated for 600V and is approved for TC-ER. The cable comes out of the tray into a disconnect and then into the motor (secured with cord grips and protecting by a metal framing along with the tray itself. A customer is referencing OSHA 1910.305(G)(1) which states where flexible cords/cables may and may not be used. He is saying that a cable cannot supply power to the motor because it is substituting a fixed wiring method and it must be run through flexible conduit.
The exact reference he is looking at is in osha's 1910.305(G)(1) where it states
I am having a hard time finding examples of installations which a cable is supplying power to a motor. Maybe I have been mislead by the cable being Power and Control cable.
1910.305(a)(3)(i)
Only the following wiring methods may be installed in cable tray systems: armored cable; electrical metallic tubing; electrical nonmetallic tubing; fire alarm cables; flexible metal conduit; flexible metallic tubing; instrumentation tray cable; intermediate metal conduit; liquidtight flexible metal conduit; liquidtight flexible nonmetallic conduit; metal-clad cable; mineral-insulated, metal-sheathed cable; multiconductor service-entrance cable; multiconductor underground feeder and branch-circuit cable; multipurpose and communications cables; nonmetallic-sheathed cable; power and control tray cable; power-limited tray cable; optical fiber cables; and other factory-assembled, multiconductor control, signal, or power cables that are specifically approved for installation in cable trays, rigid metal conduit, and rigid nonmetallic conduit.
Can someone point me to any language in the NEC that states the wiring method is in fault with OSHA? I am at the point of confusion after reading so many different articles. I can clear anything up as needed. Thanks!