when we want to weld a machine,for example a grinding machine arc welding, we must disconnect electric power. Why?please explain exactly.
2006-08-22 21:26:12 · 3 answers · asked by eshaghi_2006 3 in Science & Mathematics ➔ Physics
Arc welding is an electrical welding process. The power to the machine must be disconnected because any electrical fields would interfere with the fields created by the welding process.
2006-08-22 21:33:16 · answer #1 · answered by druid 7 · 0⤊ 0⤋
To avoid sneak paths by which the welding current could get into the power lines, or power line current get into the welding circuit. This applies only to electric welding; if you use gas, it doesn't matter.
2006-08-22 21:32:25 · answer #2 · answered by Anonymous · 0⤊ 0⤋
u want cuurent 2 flow in the opposit direction
2006-08-23 00:25:22 · answer #3 · answered by SdM 4 · 0⤊ 0⤋