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Do-It-Yourself (DIY) Question & Answer Forum
SWA earthing
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<blockquote data-quote="Evans Electric" data-source="post: 434099" data-attributes="member: 1408"><p>The original purpose of a banjo ....we were told many years ago....was the meeting face of the gland was not big enough in surface area for adequate earthing so the banjo increases this area , plus fitting a bolt through the banjo . To my mind that was enough but a fly lead is expected now to the earth bar. </p><p></p><p>We were also taught to file the paint off from around the gland hole , but no one does that today.</p><p></p><p>I think the surface area was ballcocks really, as the same did not apply to a 20mm conduit bush ....specially today where bushes are so thin you can't even grip them properly. </p><p></p><p>I came upon a new industrial board a while back with the banjo,s on the INSIDE which I'd never seen in 50 years , but some members on here were doing it that way .</p></blockquote><p></p>
[QUOTE="Evans Electric, post: 434099, member: 1408"] The original purpose of a banjo ....we were told many years ago....was the meeting face of the gland was not big enough in surface area for adequate earthing so the banjo increases this area , plus fitting a bolt through the banjo . To my mind that was enough but a fly lead is expected now to the earth bar. We were also taught to file the paint off from around the gland hole , but no one does that today. I think the surface area was ballcocks really, as the same did not apply to a 20mm conduit bush ....specially today where bushes are so thin you can't even grip them properly. I came upon a new industrial board a while back with the banjo,s on the INSIDE which I'd never seen in 50 years , but some members on here were doing it that way . [/QUOTE]
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SWA earthing
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