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Anonymous Poster

tig welding power requirments

11/14/2009 7:16 AM

Hi just bought a 300 amp tig welder (UCC-305)with ac facility for welding thin aluminum..Ti has three ranges of power,,3 to 55 amp,,7 to 230 amp and high at25 to 300 amp...Problem is in-put power spec is 240 volts at 94 amps ,,this is heavy duty inputs,,,when I only want to use low power 3 to 55 amp...normal mains at home is 240 volts at 45 amps max,,,to get full power installed for the welder will cost £££..

would it be possible to couple up to what power I have and just use it on the lower

current settings..with a good 40 amp fuse protection or will I have to spend to get full power installed.......thanks bobin
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tcmtech
Guru

Join Date: Jun 2009
Location: South of Minot North Dakota
Posts: 8376
Good Answers: 775
#1

Re: tig welding power requirments

11/14/2009 9:46 AM

That will work just fine.

Once you draw too much power you will simply trip the breakers or blow the fuse. It can be a bit hard on the machine sometimes having a sudden power down while under load though.
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Anonymous Poster
#4
In reply to #1

Re: tig welding power requirments

11/15/2009 6:40 AM

ok thanks for your reply. hoped someone would say yes its ok ...will take it easy and careful and try to find drop-out point then keep away from this level of power...thanks again bobinl
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vtbgiraud
Commentator

Join Date: Nov 2008
Posts: 80
Good Answers: 4
#2

Re: tig welding power requirments

11/14/2009 11:08 PM

Get a digital clip on ammeter and monitor the current from the panel to the welding machine. Check the inrush current when the machine is turned on, and then have someone monitor the current drawn as you turn up welding current when welding. This should give you a good idea of what you can weld. It is not a good idea to go much over 35 amps as most electrical equipment is designed for 80% loading. Remember that you will be limited in what other loads you can have odrawing from the panel while welding.

Vic
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Anonymous Poster
#3
In reply to #2

Re: tig welding power requirments

11/15/2009 6:36 AM

ok thanks for the information...will do as you say and take it easy...thanks again....bobin
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