NV C-37A Solar Water Heating Practice Questions - Nevada C-37A Solar Water Heating Contractor Examination Exam

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When copper collector-loop tubing is joined to a steel tank fitting, what fitting is required to limit galvanic corrosion?

A dielectric union or other listed dielectric fitting A PVC coupling A rubber hose barb No special fitting; solder the copper directly to the steel

Correct Answer:

A dielectric union or other listed dielectric fitting

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