Commercial HVAC compressors and chillers demand reliable three-phase power with enough inrush capacity to start under load. Here's what HVAC contractors need to know about sizing rotary phase converters for rooftop units, chillers, and commercial refrigeration.
Your rotary phase converter is drawing more amps than you expected — but that doesn't mean something's wrong. This guide explains why input amperage on a phase converter is always higher than motor FLA, and when higher amps actually indicate a problem.
After 50+ years building phase converters, we can tell you why rotary beats digital for most shops — lower cost, longer lifespan, higher inrush capacity, and simpler repair. Here's the honest breakdown of when each technology actually makes sense.
208V three-phase equipment (common in commercial buildings) requires specific phase converter configuration to avoid voltage mismatches. This guide covers the wiring, transformer requirements, and Phoenix models designed for 208V loads.
The Pro Spot i4S 22V spot welder requires stable three-phase power with high surge capacity for each weld cycle. Here's how a Phoenix DualZone phase converter handles the pulsed load, plus the sizing and installation details specific to this welder.
