Author Question: What material are electric heater coils often made from? A) Steel and chrome alloy wire B) Copper ... (Read 53 times)

pepyto · **on:** Jul 24, 2018

What material are electric heater coils often made from?

A) Steel and chrome alloy wire B) Copper and brass
C) Nickel-chrome alloy wire D) Silicon carbide

Question 2

What is the purpose of the legend on HVACR electrical diagrams?

A) To provide a reference list of the circuits used in the diagram
B) To show all the product variations and trace the history of that model
C) To provide the operational sequence for the unit
D) To list the symbols used in the diagram and define their use