What gets me is why the transformer manufacturers dont use at least a striped
and solid wire for each winding showing the phase. All the phase is, is the
start and stop of each winding where in paralell both starts are wired
together, and both stops are. In series of course this is different. Every
transformer I've designed and ordered, I had the phase shown by different color
wire. The primary in mine was always white and black. Most use two greys or
blacks like the EIA code which I think sucks. If nothing else, use the code and
use a striped color for one lead.
Best,
Will
*********** REPLY SEPARATOR ***********
On 3/12/06 at 1:25 PM Bill Turner wrote:
>ORIGINAL MESSAGE:
>
>At 07:56 PM 3/11/2006, W2RU - Bud Hippisley wrote:
>
>>I use a scope or a small amperage fast blow fuse
>>in the primary to help me figure it out. I'm sure there are other,
>>cleverer techniques out there.
>
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>If you don't have a scope, a simple AC voltmeter will do. For series
>secondaries, the voltages will either add, giving you twice the
>voltage of one, or they will oppose, giving you close to zero.
>
>For paralleled secondaries, connect one end of each secondary
>together, leaving the other ends open and measure the voltage between
>the two open ends. If the phasing is correct, you will measure
>essentially zero volts between them. If incorrect, you will measure double.
>
>Bill, W6WRT
>
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