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Do-It-Yourself (DIY) Question & Answer Forum
Transformer welder: my puzzle
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<blockquote data-quote="apprentice87" data-source="post: 554447" data-attributes="member: 13534"><p>In theory....</p><p></p><p>In practice you will find a few [old] AC machines with an OCV of about 90v [so peaks of 127v] or even 100V OCV</p><p></p><p>Very many DC machines have an OCV of 90V too.</p><p></p><p>They will shock you ok!!</p><p></p><p>This is why what everyone calls the "welding earth cable" is not, it is the "welding return lead"</p><p></p><p>The welding earth cable is the cable that you are supposed to have between the thing you are welding and a good earth, say the frame of the building.. {this can cause more problems, but not ones for the welder to care about]</p><p></p><p>Anyone know or guess what these problems are/were..</p><p></p><p>john..</p></blockquote><p></p>
[QUOTE="apprentice87, post: 554447, member: 13534"] In theory.... In practice you will find a few [old] AC machines with an OCV of about 90v [so peaks of 127v] or even 100V OCV Very many DC machines have an OCV of 90V too. They will shock you ok!! This is why what everyone calls the "welding earth cable" is not, it is the "welding return lead" The welding earth cable is the cable that you are supposed to have between the thing you are welding and a good earth, say the frame of the building.. {this can cause more problems, but not ones for the welder to care about] Anyone know or guess what these problems are/were.. john.. [/QUOTE]
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Transformer welder: my puzzle
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