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Did we ever arrive at an answer on this one ?
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<blockquote data-quote="Evans Electric" data-source="post: 484188" data-attributes="member: 1408"><p>What happened about the earthing ? </p><p></p><p>The steel conduit was the earth , hence you find conduit installed by older sparkies is done up good &amp; tight , especially brass bushes . ( Which were twice as thick as what you get today ) .</p><p></p><p>One of the reasons that, on a flush KO box ... you get one fixed lug &amp; one adjustable , the earth terminal of a socket has that strap that connects to the fixing screw, then the box lug . At one time when the socket was removed from the wall there would be no earth on the plate . So an earth terminal was introduced on the back of the box and jumper wire added. </p><p></p><p>And consequently a green earth wire added with the red / blacks .</p><p></p><p>Another thing old sparkies do , including me, was to bump SWA locknuts up tight with a hammer / chisel as the locknuts became thinner &amp; thinner and the grips kept shearing off them . The armouring was always the earth by the way . </p></blockquote><p></p>
[QUOTE="Evans Electric, post: 484188, member: 1408"] What happened about the earthing ? The steel conduit was the earth , hence you find conduit installed by older sparkies is done up good & tight , especially brass bushes . ( Which were twice as thick as what you get today ) . One of the reasons that, on a flush KO box ... you get one fixed lug & one adjustable , the earth terminal of a socket has that strap that connects to the fixing screw, then the box lug . At one time when the socket was removed from the wall there would be no earth on the plate . So an earth terminal was introduced on the back of the box and jumper wire added. And consequently a green earth wire added with the red / blacks . Another thing old sparkies do , including me, was to bump SWA locknuts up tight with a hammer / chisel as the locknuts became thinner & thinner and the grips kept shearing off them . The armouring was always the earth by the way . [/QUOTE]
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Did we ever arrive at an answer on this one ?
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