Analysis of information sources in references of the Wikipedia article "Soldering iron" in English language version.
[It] is appropriate to routinely test mains powered irons and stations... Guidance values for the tester settings [include:] Earth Bond Test ... pass result: < 0.1 Ohm ... A higher reading (i.e. up to 0.5 Ohm) can still be regarded as safe because the earth connection from the plug to the element shaft is welded or soldered throughout...
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