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Noncombustible protection shall contribute a time equal to or greater than times assigned in Table 722.7.1(1), but not less than 80 minutes. The use of materials and their respective protection contributions specified in Table 722.7.1(2) shall be permitted to be used for compliance with Section 722.7.1.

Related Code Sections

602.4.1.2.1 Types of Construction, Protection Time
Noncombustible protection shall contribute a time equal to or greater than times assigned in Table 722.7.1(1), but not less than 80 minutes. The use ...
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, but not the service device, shall open on ground faults on the load side of the feeder device. Separation of ground-fault protection time-current characteristics ...
(C) Special Occupancies, Selectivity
, but not the service device, shall open on ground faults on the load side of the feeder device. Separation of ground-fault protection time-current ...
(D) Special Conditions, Selectivity
, but not the service device, shall open on ground faults on the load side of the feeder device. Separation of ground-fault protection time-current characteristics ...