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Welding Machine Voltage And Current. Selecting the appropriate voltage is necessary as if the voltage is too high that will lead to overheating and that is the last thing you want. This is displayed to us by the arc length.
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Voltage controls the length of the welding arc and resulting width and volume of the arc cone. A rectifier converts the AC into DC on more expensive machines. Considering these transients point M indicates the voltage required to strike an arc.
In these welding processes the welding voltage is set on the machine and the current delivered by the power source is determined by the wire feed speed.
The output voltage of the welding machine is divided into no-load voltage and working voltage. As we know welding machines use electric current to generate heat. This voltage is about 30V. However if the circuit is not complete you are not welding the circuit is said to be an open circuit.
