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That’s because we wanted to save something for you since you were vacationing in the Caribbean.

Yeah… I’m sorry that I let the thread go astray on you. This is a fun loving group who like to help. After awhile you get used to the sidetracks and really, they’re helpful because they challenge us to think around a problem. One never knows where an, “awe-shucks, I wish I had thought if that,”...

If each of the motors is connected to it’s own VFD, starting one won’t help with the others. In the scenario to which I replied, the member was warning about surge currents causing the contactor to chatter. He’s right about that. I was responding to a theoretical scenario where all motors were...

Yes, but… remember that this is a 3p setup. Start morors lowest to highest. Each one that starts and idles will supply generated current. People will often use a 3p motor connected to 1p as a generator. Get it started with a pull rope snd it will make electricity for the third leg. Basically...

Definitely produces a better finish. i missed that you were planning on 3p so my thoughts now are that you might consider eliminating that VFD and use the generator full time (if you get one). Are they reliable? Yes! They are “over built” for reasons we don’t need. Some complain about control...

Yes… post 2 was me replying to you. I understood 30kW. Just glitched when I replied tonight. you can get single phase 15 HP motors and if all you have available is 240v single phase it’s the limitation with which you design. But if you can see your way to using the generator (or a rotary...

You’re right… I meant 30kW (see post 2). I have a 15kW so that’s what’s on my mind. Anyway… if you can go 3p motors you’ll be happier.

Used moulders may be attractive, but they seldom come with less than 4-heads. You don’t want to build a heavy machine around single phase (1p) motors if you can avoid it. Ideally you’d build it with 480v 3p motors. Then you’d have the power that you need to drive the big planer head and wiring...

Well then… if you don’t own the motors yet you can consider going 3-phase. They’re cheaper to operate, robust, and relieve subtle power requirements that come along with big 1P motors. The used market is attractive too. Couple them with a 3P generator and I believe you’ll have a cost effective...

Do you already own the milling machine?

Does the contactor provide over current protection?

Hi @charlesman, I can’t speak to the 30kVA unit’s virtues, but I’m wondering about your requirements. Is your shop wired with the 1P circuits derived from a 3P source? Evvy-