SC Refrigeration Practice Questions - South Carolina Refrigeration Contractor Examination Exam

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Long refrigerant lines that experience large temperature changes need expansion loops, offsets, or expansion joints because:

Copper and steel do not change length with temperature Thermal expansion and contraction will otherwise overstress joints, hangers, and equipment connections Loops are required only for aesthetic reasons The IMC prohibits any change of direction in a refrigerant line

Correct Answer:

Thermal expansion and contraction will otherwise overstress joints, hangers, and equipment connections

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