Running internal ground to tray in conduit?

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Eddy Current

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I was wondering what the code is for having a internal ground run in a piece of conduit up to a cable tray about 8 feet away. The cable that was pulled in the tray is a 4 conductor tray cable without a ground. The conduit running down from the tray is bonded at the panel and at the tray with conduit clamps and ground jumpers.
 
Both the conduit and the cable tray are permitted to be used as ECGs. As long as they are bonded together, I don't see a code requirement for an EGC of the wire type to be installed in the conduit.
 
Look in the definitions in Article 100..but like this GC,E.

Grounding is confusing for a lot of electricians as we don't use the correct term. Ground is defined as the earth.

When I hear ground, I ask what color is it and what does it do?
 
Eddy Current said:
I was wondering what the code is for having a internal ground run in a piece of conduit up to a cable tray about 8 feet away. The cable that was pulled in the tray is a 4 conductor tray cable without a ground. The conduit running down from the tray is bonded at the panel and at the tray with conduit clamps and ground jumpers.
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The 'conduit' in this case is not used as a raceway - and the installation should strictly adhere to this - but as a support fort he T(ray) C(able), hence no groudning conductor is necessary.
 
weressl said:
The 'conduit' in this case is not used as a raceway - and the installation should strictly adhere to this - but as a support fort he T(ray) C(able), hence no groudning conductor is necessary.
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250.4(A)(3) requires the conduit used as a support to the Tray Cable to be bonded so as to provide an effective fault clearing path.

The orginal question stated that the TC did not have an EGC. I indicated that the conduit could serve as the required EGC for the equipment that is supplied by the TC. After additional thought, I believe I was incorrect as 300.3(B) requires an EGC in the cable.
 
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