Match the converter's rated HP to the largest motor you'll start. For a single 5 HP machine, a 10 HP converter is typical (2× rule for hard-starting loads). Running multiple motors simultaneously? Size to the largest motor plus 50% of the others. Use our sizing calculator for a precise recommendation.

Yes. 230V three-phase output is compatible with equipment labeled 220V, 230V, or 240V — NEMA tolerance is ±10%. If your equipment is labeled 460V or 480V, you'll need a 460V converter or a step-up transformer.

Roughly 4–5 amps of single-phase 230V input per HP of converter capacity. A 10 HP converter typically needs a 50A single-phase breaker; 20 HP needs around 100A. See the spec sheet on each product page for exact nameplate values.

Yes. The NL series delivers precision-balanced three-phase suitable for CNC controls, servo drives, and VFDs. For sensitive electronics, size one tier larger than the motor HP and contact our technical support team before purchase.

Rotary — true balanced three-phase via a rotating idler motor. Best for full-load continuous duty, CNCs, and multiple machines. Static — assists motor starting only; reduces motor to ~67% rated HP. Digital/VFD — solid-state, quieter, but limited HP range and higher cost. See our full comparison.

Yes. Every Phoenix Phase Converter is designed, assembled, and tested at our Phoenix, AZ facility. Generators are American-made cast iron TEFC units. Lifetime warranty on the generator, 3-year on electrical components.

In-stock NL-series converters typically ship within 1–2 business days. LTL freight transit is 3–7 business days depending on destination. Free curbside freight to commercial addresses in the continental US. Liftgate available at checkout.

No — most converters hard-wire directly into a 230V single-phase breaker. Smaller units (5–10 HP) can use a NEMA L6-30 or 6-50 plug if you prefer flexibility. Wiring diagrams included with every unit.