Gas piping installed within a wall stud that is less than 1 1/2 inches from the edge of the stud must be protected by a sheild plate. The sheild plate must be made of steel and be at least 0.0575 inch thick.

Most heat pumps use a staging thermostat to operate two stages of heat.  What does the first and second stage operate in the heating cycle of a heat pump?

The net stack temperature on an oil fired furnace can be calculated by subtracting the air temperature around the furnace from the flue (stack) temperature.

Stack effect can transport contaminates between floors by way of stairwells, elevators, utility chases, and other openings between floor levels.

Calculate the required airflow in cubic feet per minute of an electric furnace that draws 60 amps at 240 volts. The measured temperature rise is 45 degrees F (Refrig. text page 813)

PAG lubricants (glycol based polyalkylene glycol) attract and hold moisture and do not tolerate chlorine.

What is the power of a 12 volt circuit drawing 3 amps?

The ampere rating of the disconnecting means shall be at least ____ % of the sum of all currents at the rated load condition.

A nurse is preparing to administer dextrose 5% in water (D5W) 1,200 mL IV to infuse over 12 hr. The drop factor of the manual IV tubing is 15 gtt/mL.  How many drops per min will the nurse set the manual infusion IV to deliver? (round to nearest whole number)

In a capacitor start-Induction run motor a capacitor is placed in ______ with the centrifugal switch and the start winding