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Working To Specifications Outside The Regs .
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<blockquote data-quote="Evans Electric" data-source="post: 314150" data-attributes="member: 1408"><p>You're right there Sidey .</p><p></p><p>I was an apprentice on that job but about 20 yrs old at the time ( Just before the Titanlc sank ) so I was used to those types of machine . </p><p></p><p>So that machine in my example , say in the factory next door , where we had also worked, would have had a TPN supply , in 2.5mm (7.029 back then) from a tap-off box , with 15A or 20A HRC fuses . </p><p></p><p>Somewhat bigger machine tools , ( Cincinatti say) would have say, a 30A supply , but again , only fed from one tap-off box . ( TPN X 4mm AKA 7.036)</p><p></p><p>Machines would have been rated at 15 - 20 - 30 A .</p><p></p><p>Now Sidey has made me think back , some of the machines were for Plastic injection work , I now remember seeing the old fashioned dial telephone mouldings being made in there . These were much higher rated I think , wonder if it was the only way to feed them off that particular Tap-off trunking , but still odd to be fed from two different sets of fuses. </p><p></p><p>Don't think the tap-off boxes went over 30A on that system . </p></blockquote><p></p>
[QUOTE="Evans Electric, post: 314150, member: 1408"] You're right there Sidey . I was an apprentice on that job but about 20 yrs old at the time ( Just before the Titanlc sank ) so I was used to those types of machine . So that machine in my example , say in the factory next door , where we had also worked, would have had a TPN supply , in 2.5mm (7.029 back then) from a tap-off box , with 15A or 20A HRC fuses . Somewhat bigger machine tools , ( Cincinatti say) would have say, a 30A supply , but again , only fed from one tap-off box . ( TPN X 4mm AKA 7.036) Machines would have been rated at 15 - 20 - 30 A . Now Sidey has made me think back , some of the machines were for Plastic injection work , I now remember seeing the old fashioned dial telephone mouldings being made in there . These were much higher rated I think , wonder if it was the only way to feed them off that particular Tap-off trunking , but still odd to be fed from two different sets of fuses. Don't think the tap-off boxes went over 30A on that system . [/QUOTE]
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