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standup PT wire diagram
Posted: Fri May 09, 2008 11:10 pm
by rockstah
since my PT doesnt have white or green wires on the primary side - im wanting to find out if im assuming the color scheme correctly.

Posted: Fri May 09, 2008 11:53 pm
by SDM
Almost, the two solid blues are bias. Blue with reddish stripes are 400V taps.
Posted: Sat May 10, 2008 1:04 am
by rockstah
SDM wrote:Almost, the two solid blues are bias. Blue with reddish stripes are 400V taps.
well thats where i got confused i figured both taps would be schemed together as far as plain colors but then it makes sense that the blues are bias....but u are ya sure Steve?
plain red = 500dcv tap
blue bias
blue/purple is 400dcv tap
red/yellow CT
Posted: Sat May 10, 2008 2:03 am
by SDM
Just put one in, so yeah that's how it was wired. Actually it may have that PT in the new 100 watter instructions Andy redid too, now that I think about it.
Of course you know how George likes to keep you on your toes with color codes

Posted: Sat May 10, 2008 2:28 am
by rockstah
seems the color codes change quite a bit;) - thanks Steve.
Posted: Sat May 10, 2008 8:09 am
by Flames1950
SDM wrote:Actually it may have that PT in the new 100 watter instructions Andy redid too, now that I think about it.
Yes, that amp is on my bench being modded right now -- blue w/stripe are the low voltage taps, solid blues are the bias.
Posted: Sat May 10, 2008 11:57 am
by rockstah
thanks guys!