The most accurate method of charging a small appliance which holds less than a pound of refrigerant is to add:
A) Vapor into the low side with the system operating while checking the compressor amp draw.
B) Vapor with the system not operating up to a specified static pressure at a specified ambient temperature.
C) Liquid into the system with the system off until the liquid stops going in.
D) Liquid into the system until the pressure equals the saturation pressure and temperature.
B
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