Technical guides written by engineers,
not marketers.
Ten cornerstone articles covering everything you need to know about choosing, sizing, installing, and maintaining a rotary phase converter. From complete beginners to experienced electricians.
How to Size a Rotary Phase Converter
The complete sizing formula, load multipliers, single vs. multiple machine calculations, and common mistakes to avoid.
Phase Converter Installation: What to Expect
Location requirements, L1/L2/T1/T2/T3 wiring explained, breaker and wire sizing, and testing after installation.
Grounding, Bonding, and NEC Code for Phase Converters
NEC Article 455 requirements, equipment grounding conductor sizing, bonding, and an inspector-ready installation checklist.
Soft-Start vs Hard-Start Phase Converters
What causes hard starts, when AutoStart matters, GPX digital series benefits, and the NLA model for compressors.
Rotary Phase Converter vs VFD: Which Is Right?
When to use each technology, multiple machine scenarios, VFD limitations, and cost comparison with real examples.
Running CNC Machines on a Rotary Phase Converter
Why CNC is a hard load (2.0× multiplier), voltage balance requirements for Haas/Mazak/Fanuc, and PL Series sizing table.
Phase Converters for Farm Equipment
Irrigation pumps, grain dryers, augers, rural single-phase power limitations, and the NLA Series for agricultural loads.
Phase Converter Troubleshooting: Common Problems & Solutions
Won't start, trips breaker, motor runs hot, voltage imbalance, humming/noise — each with cause and solution.
What Is Three-Phase Power? A Plain English Guide
Single vs. three-phase explained simply, why equipment requires it, why utilities don't always provide it, and how a rotary converter creates the third leg.
How to Read a Motor Nameplate and Size Your Converter
HP, FLA, voltage, service factor — how to use nameplate data to correctly size your rotary phase converter, with a full example walkthrough.
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