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Tough Meter Tails.

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I reused some old meter tails today, cira 1980s. Wow, did they bend easily. It was a delight to use them. Why oh why are modern meter tails so difficult to bend into shape. Is the copper harder? I even heard a meter installer complaining about how he hated trying to bend modern meter tails.


P.s. Is that why modern meter tails come loose so easily in main switch terminals if we just look at them? There is no "give". They are just so rigid.


Z.
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    Has anyone asked any CU manufacturers whether 6381Y is OK? 

    I can't see a problem with cage clamps but screws might sever the smaller wires making up the conductor.  That said I had a quick look online at Hager installation instructions.  These seems to limit outgoing cables to anything BASEC 1mm2 to 16mm2. Incoming cables states max 35mm2 and says to double back anything less than 1.5mm2 (which would seem to be a very low csa for an incomer and I suspect that this should refer to outgoing cables but the layout of the data sheet leaves this in doubt)  no reference to cable spec or minimum strand diameter.  If doubled back 1mm2 were acceptable this would imply that individual strands with a 1mm2 csa would be OK.  These would be circa 0.57mm diameter.  That said the Eland data sheet I have seen for 25mm2 and 16mm2 6381Y has 0.41mm diameter wires so difficult to make any firm deductions from all of this even if the 1.5 comment were to apply to incomers.  Any CU manufacturers who look at this forum might want to comment.

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  • 0
    Has anyone asked any CU manufacturers whether 6381Y is OK? 

    I can't see a problem with cage clamps but screws might sever the smaller wires making up the conductor.  That said I had a quick look online at Hager installation instructions.  These seems to limit outgoing cables to anything BASEC 1mm2 to 16mm2. Incoming cables states max 35mm2 and says to double back anything less than 1.5mm2 (which would seem to be a very low csa for an incomer and I suspect that this should refer to outgoing cables but the layout of the data sheet leaves this in doubt)  no reference to cable spec or minimum strand diameter.  If doubled back 1mm2 were acceptable this would imply that individual strands with a 1mm2 csa would be OK.  These would be circa 0.57mm diameter.  That said the Eland data sheet I have seen for 25mm2 and 16mm2 6381Y has 0.41mm diameter wires so difficult to make any firm deductions from all of this even if the 1.5 comment were to apply to incomers.  Any CU manufacturers who look at this forum might want to comment.

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