Article 430, the largest Article in the NEC, is commonly understood to be the “motor” Article. But if motors are a part of air-conditioning (A/C) and refrigeration equipment, they also fall under Art.

Thermodynamics, as with most concepts in science and physics, is most accurately described using mathematical equations. However, simple explanations, although not perfectly accurate, are sufficient ...

Your heating and air conditioning system is one of the most vital systems of your home, delivering and removing warm or cool air from every room and maintaining humidity levels. It also includes a ...

The modern air conditioning system cools an indoor space by using the refrigeration cycle. This refrigeration cycle works by controlling the level of energy in the system’s refrigerant: Some parts of ...

We’ve only been able to harness the cold for our benefit for a little over 100 years, but innovations like refrigeration and air conditioning have completely transformed the way we live and eat. A ...

For some inventions, say the light bulb, everyone knows who invented it. But at the U.S. Capitol on a hot July day, no one seemed to know who invented the air conditioner. Even as the statue of a man ...

Motors for air conditioning and refrigeration equipment are special-purpose motors called “hermetic,” meaning they’re sealed. They’re sealed because they’re in the same housing as the compressor and ...

Your heating and air conditioning system is one of the most vital systems of your home, delivering and removing warm or cool air from every room and maintaining humidity levels. It also includes a ...