Q. What are the minimum cover requirements for PVC and USE cable in commercial occupancies? A. In commercial occupancies, the minimum “cover” requirement is 18 in. for PVC and 24 in. for USE cable in accordance with the requirements set forth in Table 300.5. Note 1 to Table 300.5 defines "cover" as the distance from the top of the underground cable or raceway to the top surface of finished grade, concrete or similar cover.
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