[Amps] 12 KW CCS ON 160-15M....USING THE 3CX-6000A7..... PART 34

[Steve Harrison]

On 10/20/2025 6:50 PM, jim.thom jim.thom at telus.net wrote:
> Secondary wiring now  completed.   The 2 x 5300 vac secondary's are also
> wired in parallel  with  GTO-15   HV wire...(15 kv  AC  rated, and uses 14
> ga stranded wired).

I think I would have rathered wired them in series, because you can bet 
that those transformers do NOT have exactly the same output voltage as 
one another. Thus, by wiring them in parallel, you are going to have one 
of them bucking or boosting the other transformer, causing them both to 
draw more idling current as well as dissipating useless power internally 
due to the bucking-boosting. By wiring them in series, that won't 
happen, and the one at the "high end" of the 5300-volts would still have 
that same voltage if wired in parallel. That's how I wired a pair of 
pole pigs for a good friend of mine some years back. He first attempted 
connecting them in parallel but had them drawing well over ten amps just 
idling that way. In series, that dropped down to less than an amp or so. 
This is less of a problem with smaller transformers simply because the 
current draw, when they are very-slightly mismatched, is much less and 
generally more-withstandable. But try putting an ammeter between them 
and you'll easily find the difference.

Steve, K0XP