Author Question: What is the purpose of checking the supply voltage before operating the system? A) To determine ... (Read 140 times)

LaDunn · **on:** Jul 24, 2018

What is the purpose of checking the supply voltage before operating the system?

A) To determine the voltage drop in the wire
B) To verify that the supplied voltage is within manufacturer's specifications
C) To determine which power leg is positive and which is negative
D) To figure out where to connect the power wiring to the unit

Question 2

Balancing valves are required:

A) To allow adjustable flow. B) On venturi pipe systems.
C) To create negative pressure. D) On single circuit loops.