Mobile Generator question/opinions

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Hi,I'd like to buy a gas generator to have as an option to (occasionally) run my 3 welders in my driveway.  I tend to over buy beyond my need - not that I have that budget but get over excited about new tools.I have: Miller 211, AHP 200dx, Miller Thunderbolt 225 AC/DC  - I'd like to have the 220V power afforded to use most of the power these can deliver - but dont "need" it.I dont make a living with this equipment - so trying hard not to go overboard.  What running / surge watt rating would you recommend?  What are you using?I have an option for a new Duromax 10000E off facebook marketplace for $800 - surely would handle all - but again - if I only need a 6500 or even much less rated unit and can get that for $400 somewhere- that's $400 I'd have for materials to use!Thx in advance for advice.
Reply:Be better off buying a long extension cord to run the machines in yer driveway.cross off the Thunderbolt from the list for generator use. They just take too much power/surge.Straight math formulas for figuring out input power for wiring up a circuit/receptacle in the geerage doesn't work out the same for generators.Yer MM211 would run off a 6500 but ideally the 10k Duromax would be a better option.Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:Stick and TIG needs at lesd 9,000 watt generator.A small MiG needs 3,000 watt and up.Stick and TIG needs more for starting the weldDave

Originally Posted by jfk92

Hi,I'd like to buy a gas generator to have as an option to (occasionally) run my 3 welders in my driveway.  I tend to over buy beyond my need - not that I have that budget but get over excited about new tools.I have: Miller 211, AHP 200dx, Miller Thunderbolt 225 AC/DC  - I'd like to have the 220V power afforded to use most of the power these can deliver - but dont "need" it.I dont make a living with this equipment - so trying hard not to go overboard.  What running / surge watt rating would you recommend?  What are you using?I have an option for a new Duromax 10000E off facebook marketplace for $800 - surely would handle all - but again - if I only need a 6500 or even much less rated unit and can get that for $400 somewhere- that's $400 I'd have for materials to use!Thx in advance for advice.
Reply:There are some welders that do not run well off a generator. FWIW.ChrisAuction Addict
Reply:OK - thx all.Seems the stick is off the table which is fine.  wish i could run the extension cord - problem is the power/wiring available in the garage - it's - not good, had an electrician in - was going to run a dedicated 220V line for me - longer story but unsure if that will happen - may have additional use for a portable generator in addition to use as a power source for my f-offery - so seems the Duromax 10000E may be the direction.  $800 seems like a decent deal vs retail as a new unit.  Appreciate all feedback
Reply:I use a 5000 max 4500 continuous Honda generator for stick.  Esab 160 welder. No issues for repair work.  Gas tank is small.  Runs about 3 hours with occasional welding and power tools.As stated,  The question is how will your welder perform off the genny power? Specifically the AHP?  The thunderbolt seems redundant/expendable off generator power.Last edited by tapwelder; 08-11-2020 at 03:22 PM.
Reply:Hi.  I can run  my 200 amp stick inverter off  a  5500k  Honda powered generator.  It wouldn't be ableto drive it at full power,  But all I ever need is 1/8' rods at 120 to 140 amps and it can handle that easily
Reply:

Originally Posted by jfk92

OK - thx all.Seems the stick is off the table which is fine.  wish i could run the extension cord - problem is the power/wiring available in the garage - it's - not good, had an electrician in - was going to run a dedicated 220V line for me - longer story but unsure if that will happen - may have additional use for a portable generator in addition to use as a power source for my f-offery - so seems the Duromax 10000E may be the direction.  $800 seems like a decent deal vs retail as a new unit.  Appreciate all feedback
Reply:Sell the Thunderbolt and get Miller Bobcat welder/generator. 10 times the generator of an inexpensive import and a decent welder to boot. Much better than the Thunderbolt.
Reply:A small MIG will will run well on a 4,000 generator. I would use a 240 volt .Odd's are you will not miss stick.Dave

Originally Posted by jfk92

OK - thx all.Seems the stick is off the table which is fine.  wish i could run the extension cord - problem is the power/wiring available in the garage - it's - not good, had an electrician in - was going to run a dedicated 220V line for me - longer story but unsure if that will happen - may have additional use for a portable generator in addition to use as a power source for my f-offery - so seems the Duromax 10000E may be the direction.  $800 seems like a decent deal vs retail as a new unit.  Appreciate all feedback
Reply:

Originally Posted by Welder Dave

Sell the Thunderbolt and get Miller Bobcat welder/generator. 10 times the generator of an inexpensive import and a decent welder to boot. Much better than the Thunderbolt.
Reply:180A of inverter MIG welding current will consume 30A which will use up 7kW of generator power and causes the voltage to drop to 225V from 240V.   So you need about 12kW minimum to have good longevity and to,reduce voltage drop.  I've used my troy-bilt which has

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Reply:It's rare for anyone to regret overspending (oversizing) on a portable generator purchase—especially for welding use.Once you run the numbers for wattage requirements, it comes down to balancing power, price and portability to get the operating output you need out of your welders.More on sizing a generator for welding.Good luckDaveWelditU.comLincoln Weld-Pak 140HDHobart Handler 140
Reply:Bigger gensets will always take more fuel per hour regardless of how much power you are using from them too... just something to think about

if not using it all the time then a little extra fuel probably won't matter but if you run it every day you'll be paying a lot more for power.
Reply:I always found it interesting how many folk bought engine drive welders for the generator side only.
Reply:

Originally Posted by tapwelder

I always found it interesting how many folk bought engine drive welders for the generator side only.
Reply:

Originally Posted by Broccoli1

cross off the Thunderbolt from the list for generator use. They just take too much power/surge.
Reply:

Originally Posted by G-ManBart

As a test I ran my Dialarc 250 off my Hobart Champion Elite, which is an 11Kw generator, and it worked just fine running typical 1/8" 7018 and certainly didn't seem to be struggling.  I can't imagine that a Thunderbolt 225 AC/DC (had one of those in the past) would use much more power for the same output than a Dialarc 250.
Reply:

Originally Posted by Oscar

180A of inverter MIG welding current will consume 30A which will use up 7kW of generator power and causes the voltage to drop to 225V from 240V.   So you need about 12kW minimum to have good longevity and to,reduce voltage drop.  I've used my troy-bilt which has <6%THD.   You need clean power IMO.