Stranded wire or cable is acceptable. Braided cable is not acceptable.
As skin effect forces current to concentrate in the outside layer of
wire and as the strands in braided cable change position from interior
to exterior, the current must pass from strand to strand. Contact
resistance, increased by any corrosion or contamination, increases the
resistance of braided cable.
73 de WOØW
Beat Meier wrote:
>Hello
>
>Is cadwelding is the same as "alominotérmica" (term in spanish)?
>I.e. Copper oxide + aluminio powder
>3CuO + 2Al = 3Cu + Al2O3 + heat
>
>And what about connecting ground roads togehter.
>Someone told me I should not use strand copper but the only thing I can get
>is 35mm^2 (AWG2) with 7 strands or 50mm^2(AWG0) with 19 strands.
>Is it true that this will oxide rapidly and loss the low resistance?
>The book I have now says you must use at least 35mm^2 to connect the roads.
>
>Thanks
>
>Beat
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