On Oct 14, 2005, at 7:39 AM, Bill Fuqua wrote:
> ????????????????The minimum size wire specified in the “National
> Electrical Code” is chosen for voltage drop, and to make it easy for
> the electricians to make the right choice, in most cases,? and not for
> temperature rise.? I have had a problem with electricians insisting
> that a larger size wire is not allowed.
Guffaw! The only time a larger size wire is not allowed is when it
won't fit in the wire clamp in the connector.
> And of coarse it is.? Some people function on simple sets of rules and
> just can't make decisions based voltage drop, wire size and length.?
> So the code accommodates these people who are hopefully not the
> licensed electricians but their helpers.
Licensed electricians are unlikely to have knowledge of C-filter anode
supplies.
> ????????
> ????????I ran #6 to my amplifier off an 20 amp 240 volt breaker. It is
> a fairly short run but it did solve my voltage drop problem.? I am
> considering adding a filtering choke to my power supply. At a full 240
> volts it produces much higher voltage my 4-1000A amplifier needs.
4-1000As run well at 6000 - 7000v.
> This naturally, doing this? would eliminate the need for the larger
> wire but would add weight to the power supply.? The upside is that the
> load regulation would improve.
True, but only if it was a resonant-choke filter
>
> 73
> Bill wa4lav
>
>> > #12 will get pretty warm at 29 amps.
>>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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