ESAB ET 220i AC/DC single to 3 phase

[citytrucker26]

Hello, I was wondering if I could use a 5 hp rotophase to make 3 phase for this machine. I only have 60 amps single, it requires 80 on single. Will it work? It requires 50 amps on 3 phase.

Or do I have to purchase a buckbooster for my needs?

Thank you in advance. Gary.

[Brand X]

Run it on single phase.5 hp rotary will do nothing for it.. I am not sure where you get your specs but 80 amps input is way off base..Unless there is something really wrong with your machine..

[citytrucker26]

I am just going by whats in the book for power supply.

[danielplace]

Hello, I was wondering if I could use a 5 hp rotophase to make 3 phase for this machine. I only have 60 amps single, it requires 80 on single. Will it work? It requires 50 amps on 3 phase.

Or do I have to purchase a buckbooster for my needs?

Thank you in advance. Gary.

I think someone put something in your drink.

Not sure what specs your reading but it requires nothing close to what you have posted.

The machine is 220 amp. It won't use over 35 on single phase. #8's on a 40 amp breaker feeding a 50 amp 6-50r is more than that machine will ever need.

[citytrucker26]

Page 3-2 table 3-1
1 PH. 3PH.
208VAC. 100A. 60A
230VAC. 80A. 50A
460VAC. 50A. 30A

I don't know how to upload pictures otherwise I would just take one of the manual that came with it. I just typed it. So your telling me ESAB manual is wrong ? I am going to hook it up and see what happens.

I have 3awg on a 60 breaker with slow fuse shut off for supply. Over kill yes. For the big millers, not enough.

I have a big 320AB/p that throws the breaker (60a) at 80 amps AC tig with HF. Thats the reason I got this welder. I hope it works out. I thank you for the info.

[citytrucker26]

https://flic.kr/p/2khYLY9

Link to photo of the page

[Brand X]

I run mine on single, and 3 phase with a 15 hp rotary. You will fine on single phase, it will tig weld on a 30 amp 240 volt breaker all day at 200 amps output..

[danielplace]

Page 3-2 table 3-1
1 PH. 3PH.
208VAC. 100A. 60A
230VAC. 80A. 50A
460VAC. 50A. 30A

I don't know how to upload pictures otherwise I would just take one of the manual that came with it. I just typed it. So your telling me ESAB manual is wrong ? I am going to hook it up and see what happens.

I have 3awg on a 60 breaker with slow fuse shut off for supply. Over kill yes. For the big millers, not enough.

I have a big 320AB/p that throws the breaker (60a) at 80 amps AC tig with HF. Thats the reason I got this welder. I hope it works out. I thank you for the info.

I found that.

Not sure why a 220 amp Esab inverter needs twice what a Dynasty 280 amp inverter runs fine on. I guess inrush to charge caps but don't think you need full wire size to match those oversized fuses especially if just for inrush. That is over pretty quick.

Honestly I was going by my Dynasty 280 thinking if it can run on 33 amps surely a 220 amp can be pulling any more. Then I look at the specs I posted. Seems like 35 or 40 should do it.

The startup design must be way different than a Miller.

Am I missing something in the specs listed that would say that machine needs 80 amps. That is outrageous for a 240 volt 220 amp inverter.

Certainly do not need more than #8 but if it were myself I recon I would put #6's to a 6-50R outlet use that for power and you will have plenty of headroom and use the 80 fuses as just to fire the machine initially.

Did you see a wire size recommended for that 80 amp fused circuit ?

If it says so I guess but that seems like way too much for that machine. Even if it needed 80 to start that would only need approx #6's when you figure duty cycle of machine as the NEC allows in a welding power supply circuit. They are doubling the needed amps it says 200%(for startup) so you need 40 amp wire I would think. That is #8's but #6 better especially if doubling the fuse size seems smart to do.

They are going to specify amperage fuses they should give a hint to consumer of the best appropriate wire size. Running wire good for 80 amps would be unnecessary to say the least.

[Brand X]

Mine starts up just fine on a 20 amp 240 volt line It crazy to worry about something that will never happen.

[Munkul]

It's a Lorch-based machine, they're very, VERY efficient for the input amps. Ignore what the book says, it's way too conservative, and is rated on stick welding, not TIG.

You'll run TIG on a 30 amp 230v service all day long, every day, at max amps, and it won't complain!

For reference, my HT200 (same architecture) runs 200 amps out, at 19 amps input 240v on TIG (in the book). It's hardly going to take an extra 10 input amps to jump to the last 20 amps of output.

[citytrucker26]

It's a Lorch-based machine, they're very, VERY efficient for the input amps. Ignore what the book says, it's way too conservative, and is rated on stick welding, not TIG.

You'll run TIG on a 30 amp 230v service all day long, every day, at max amps, and it won't complain!

For reference, my HT200 (same architecture) runs 200 amps out, at 19 amps input 240v on TIG (in the book). It's hardly going to take an extra 10 input amps to jump to the last 20 amps of output.

Thank you kindly sir. Have a nice weekend.

[ccawgc]

The effective line current is only 27 amp on 230 volts. Go look at the specs page 2-3.
The way I read the table you found is. minimum building size entrance. the service disconnect fuse size is from the table on 2-3. Read the fine print around the tables on both pages. I found on line this manual.
Issue Date: October 26, 2016 Manual No.: 0-5346

[danielplace]

Thank you kindly sir. Have a nice weekend.

Curious what wire size was the factory installed cable on the machine ?