NV C-21E Solar Air Conditioning Practice Questions - Nevada C-21E Solar Air Conditioning Contractor Examination Exam

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Which tubing is the usual choice for a pressurized solar collector loop that can stagnate well above 250°F on a Nevada roof?

PEX-A rated 180°F at 100 psi Type L copper tube Schedule 40 PVC Flexible elastomeric hose listed only to 140°F

Correct Answer:

Type L copper tube

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