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'How-to' Welding Tutorial: Choosing an A.C./D.C. Stick Arc Welder

In this 1080P HD video, Moses Ludel discusses A.C. versus D.C. arc welding, niche welding requirements and when to use these two welding modes. See the series of HD video welding sessions and demonstrations—at 4WD Mechanix Magazine's 4WD Mechanix Video Network!

(If you have sufficient bandwidth, this HD video can be opened as 1080P quality at full-screen size.)

HTP America 221 machine ready for stick welding 

     There is a place for A.C.and D.C. welding modes. Moses Ludel discusses the equipment you need for quality arc/stick welding. For our tutorial session, the 4WD Mechanix shop uses the versatile HTP America 221 Invertig TIG/stick machine.

AC balance and frequency settings

     A simpler "buzz" box typically offers A.C. stick welding mode. Some machines offer A.C. and D.C. modes. The HTP America Invertig 221 is a versatile A.C. and D.C. inverter TIG machine with optional liquid cooled torch. The 221 (above) doubles as a professional grade stick welder. Peak A.C. and D.C. arc/stick amperage is 220, which is plenty for most welding chores.

Setting the amperage and voltage

As voltage and amperage setting drops, the duty cycle increases. In this video, Moses Ludel discusses the duty cycle rating for the HTP America's 221 Invertig machine. Above, the 221 is set for stick (SMAW) D.C. arc welding mode and for 136 amps.

    HTP America 221 Invertig is an A.C./D.C. TIG unit with stick welding option. Earlier Invertig 201 TIG/stick welder from HTP America

     Invertig 221 in TIG mode (at left) delivers professional grade results with far less electric current draw! Workhorses like the HTP America 221 and earlier HTP Invertig 201 (right) can double as stick welders. They operate on 230V single phase for U.S. electrical circuits.

     Note: At the magazine's shop, we use a dedicated 60-amp circuit (paired 30-amp breakers) as our welder-only power source. Wiring size exceeds code standards and requirements throughout this circuit. "Out-of-wall" amperage draw for the Invertig 221 in 230V single phase mode is 26 amps at a 220 amperage setting in TIG mode; 32 amps for a 200 amperage setting in stick mode. "Buzz boxes" and other types of transformer welding equipment draw considerably more amperage at each current setting. Inverter technology like these HTP machines has advanced our welding capability and saves energy!

     Caution: Breakers, plugs and wiring gauge must exceed requirements for the maximum load draw by a safe margin. If you are not familiar with electrical work, get a qualified professional to assist.

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