3000W Chinese Gensets Info.
professor95 wrote: EDIT ADDED 45/5/2013- When this thread started in March of 2005, I never expected to see it survive this long or amass the quantity of information that has been shared here. In...
Forum Discussion
quabillion wrote:jimmyfred wrote:
Question for Professor 95......
.........I have a crackerbox welder(225AmpAC\170Amp DC) that I'D like too power from a Chonda genset ; My question : what KW size of generator would I need to purchase too Power a crackerbox welder ? I was thinking 10kw , but an electrician friend said 10kw won't be big enough ! So , can you do a little mathematics and calculate the size giny I'd need to accomplish this ? , thanks , jf
Although I am not Randy (professor95), I feel I can answer your question somewhat.
I have tried to run a "crackerbox" 225 Lincoln with several size generators. What I have found is that a 6KW will run the welder, but not correctly. The arc seems weak and the penetration is less. Turning the amp knob to a higher setting has no effect. The same results happened with a 10KW generator, but to a lesser extent.
A 14KW generator ran the welder perfectly, I could tell no difference between it and grid power as far as laying the bead goes.
I suspect this has to do with the fact that welder transformers are known to have an extremely low power factor rating.
Makes me wonder if a 10KW gen will power the welder if a bank of hard start caps are installed. It sure makes my 3500 genny breath easier when my coach A/C starts up. One would think that the initial strike of the arc would be the same type power draw as a compressor rotor.
