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Author Topic: What is CU Wire  (Read 825 times)
KJ6TSX
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Posts: 116




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« on: February 04, 2013, 09:08:48 PM »

I reading about making a Balun and the directions say use 1mm CU wire. I know what 1mm is but what is CU Wire. solid core copper? stranded??
Does anyone know?
Thanks
George
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AC2EU
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Posts: 410


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« Reply #1 on: February 04, 2013, 09:23:12 PM »

Cu is the symbol for copper. Stranded, solid etc, apparently is not specified.
1mm is an odd way to spec a wire since here in the USA we use AWG ( American Wire Gauge). However there are spec/conversion charts for the actual measurements in various units.

Good luck!
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WB6BYU
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Posts: 13335




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« Reply #2 on: February 04, 2013, 09:41:27 PM »

Quote from: AC2EU

1mm is an odd way to spec a wire...



Its not all that odd - it is used by more people world-wide than AWG is!
(And you have to be careful talking about wire gauge with the British, who
have their own wire gauge.

1mm is about #18 AWG.

In most cases the choice of stranded or solid depends on the application
and what is available.  You shouldn't have a problem winding #18 solid wire
onto a toroid, and it will keep its shape better than stranded wire.  But
for a thick wire you may find that stranded bends better to follow the
shape of the core.  Whenever there is a lot of flexing, stranded wire is
better, but otherwise it usually doesn't matter all that much.
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KJ6TSX
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Posts: 116




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« Reply #3 on: February 04, 2013, 09:55:51 PM »

Thanks for the info
Now I Know
73's
George
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