SC Heating Practice Questions - South Carolina Heating Contractor Examination Exam

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Guards are required at roof equipment that needs service when that equipment is within 10 feet of a roof edge more than 30 inches above the surface below. What are the minimum guard rules?
Correct Answer:
A guard extending not less than 30 inches beyond each end of the served equipment, with the top not less than 42 inches above the adjacent surface, that will not pass a 21-inch-diameter sphere

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