On Wed, 2007-06-06 at 19:14 -0500, Stuart Rohre wrote:
> Jerry makes a good point. The AC ampacity of wires is not solely sufficient
> for DC, and is imperfect at longer lengths for AC drops. Consider the
> voltage is rising and falling at the frequency of the AC potential, while
> the DC is heating the wire continuously while in use.
But we measure AC in RMS which has the same heating value as that same
current DC.
>
> I have noticed Kenwood is more generous with their size of cables than some
> manufacturers. Most hams probably at some point have to custom make their
> cables for mobile or home applications, so I simply am advocating a
> conservative cable sizing for ham transceivers.
>
> -Stuart
> K5KVH
>
Yes, Kenwood and Yaesu use a pair of 14s for hot and another pair for
ground. Each wire has a connector pin at the radio too.
Maybe those are even 12s on some radios. Lots more copper than single
14s.
73, Jerry, K0CQ
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