I'd like to add to Larry's note: the current capacities given in the table
indicate the maximum safe current for usual grade of insulation (better
insulation allows higher currents and temperatures). Single wires are
usually graded for their 'suspended in still air' rating and pairing up in a
cable degrades this because they heat each other. In large cable bundles
this can degrade the rating to less than half. What could be more important
in some applications as Steve alluded to is the voltage drop. If you have
long runs, a thicker cable would be better.
David
G3UNA
----- Original Message -----
From: "Larry" <[EMAIL PROTECTED]>
To: "Steve Kallal" <[EMAIL PROTECTED]>
Cc: <[email protected]>
Sent: Sunday, July 15, 2007 3:06 AM
Subject: Re: [Elecraft] Proper K2 power cord?
Steve,
Here is a chart of wire gage versus current capacity for power
transmission.
Gage Amps
12 9.3
14 5.9
16 3.7
18 2.3
20 1.5
The K2 10W version uses 2.0 amps for transmit and up to 0.250 amps for
receive. It looks like 16 gage wire would work fine.
If it were me, I would buy the connector from Elecraft.
73
Larry
KB5DXY
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