Which of the following is an NEC® requirement for grounding and bonding cable tray installations?
a. Only single conductor cable may be used in cable trays used as equipment grounding
conductors.
b. Nonmetallic cable trays must be bonded with flexible bonding jumpers.
c. Steel or aluminum trays may be used as equipment grounding conductors.
d. Metal cable tray does not require bonding.
c. Steel or aluminum trays may be used as equipment grounding conductors.
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