Announcement

Type CL2, V rating. Blue, Red, Yellow, White, Green. Works with electromechanical relay. Twist the dial and feel the “click” that confirm your changes.

Tom, I do a lot of tech support for both Trane and Copeland and fluttering high side gages are not really a concern. Both a reciprocal compressor and a scroll will discharge gas in pulses.

As others have noted, the sizing of breakers, and to some extent conductors, serving HVAC compressors can become quite confusing. The simplest approach is to follow the manufacturer’s recommendations, and use an experienced electrician for “real world” installation details. Air-Conditioning and Refrigerating Equipment This Article applies to electrically driven air-conditioning and refrigeration equipment that has a hermetic refrigerant motor-compressor. The rules in this Article add to, or amend, the rules in Article and other Articles.

Why the special treatment? First, hermetic motors are not general purpose. They are sized, fitted, and engineered for specific applications. You may have seen the phrase “hermetically sealed” on food containers. These motors are sealed airtight. And that affects what you can expect of the motor in terms of performance and heat dissipation. Each air conditioner manufacturer e. Cooling and other characteristics are different from those of non-hermetic motors.