HuanYang 2.2KW spindle nut (ER20A)

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

@WaywardWoodworker

@Aiph5u

it is crystal clear what the manual and the nameplate of this VFD say: 20 A @ 110 ±20% V 3-phase electrical output capacity. When you are an electrician, and you have a clear statement of the VFD manufacturer which gives you the specification of the output rating (and we have this here),

What is the nameplate input rating? In the absence of specific manufacturer instructions (or engineered plan) that is all that matters to an electrician.

PS: The other day you said:

@WaywardWoodworker

The nameplate rating of the VFD would only be used if the manual does not contain specific information

Here both say the same, manual and VFD.

If you want to say, if the input rating is missing, you can do nothing, and you refuse to connect this VFD, then I support that. Better than connecting it to an underdimensionated circuit. But I think you can very well calculate the approx. input rating based on the knowledge about single and three-phase electricity and how a VFD works. And I strongly believe that for a VFD sold for the 2.2 kW spindles they also offer, I am very sure that by dimensionatig a 45 A circuit, you are on the very safe side.