Question

core - question # 11
the color marking that is required on all pipes, hoses, or other devices through which a flammable refrigerant passes and where a service connection is probable must extend a minimum of how many inch(es) in both directions from such locations?
a 1
b 2.5
c 3.5
d 4.6

Explanation:

This is a technical - knowledge question related to safety regulations for flammable refrigerants. According to relevant safety standards, the color marking on pipes, hoses, etc. with flammable refrigerants near service connections must extend a minimum of 2.5 inches in both directions.

Answer:

B. 2.5