Gas pressure should be checked at the rooftop valve prior to installation. The gas line pressure for natural gas in inches of water column should not exceed
A) 10.5 in wc B) 2 psi C) 5.0 in wc D) 3.5 in wc
A
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What will be an ideal response?Which organization is represented by the acronym AHRI?
What will be an ideal response?
Carry the answer to three decimal places. What is the total thickness of these shims taken from a bearing: 0.007 inch, 0.125 inch, 0.140 inch, 0.187 inch, and 0.004 inch?
Fill in the blank(s) with the appropriate word(s).
Carry the answer to five decimal places. A meter is to be bolted to a switchboard. The meter studs that will fit into the holes on the switchboard are 0.4365 inch in diameter. Express the hole sizes in decimal form if they are to be 
inch larger in diameter than the studs.
Fill in the blank(s) with the appropriate word(s).