SC Plumber Contractor Practice Questions - South Carolina Plumber Contractor Examination Exam

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A two-stage LP-gas system serving building appliances typically delivers which pressure into the interior Schedule 40 piping that is sized from the 11-inch water-column tables?

2 psi into the building, with no second-stage regulator 11 inches water column after the second-stage regulator 5 psi after the first-stage regulator, used as the appliance pressure 14.7 psi absolute, treated as gauge pressure

Correct Answer:

11 inches water column after the second-stage regulator

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