NV C-37 Solar Practice Questions - Nevada C-37 Solar Contractor Examination Exam

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Long copper collector headers on a hot Nevada roof need expansion accommodation because copper grows about 1.1 inches per 100 feet per 100°F. Which installation detail is correct?

Anchor the pipe rigidly at every rafter with no slack Switch the entire glazed loop to Schedule 40 PVC so it will not expand Fill the pipe with sand so it cannot move Provide expansion loops, offsets, or swing joints and do not lock the pipe at both ends

Correct Answer:

Provide expansion loops, offsets, or swing joints and do not lock the pipe at both ends

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