RE: Question regarding NST Phasing . . .

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jim-at-jlproduction-dot-com>

Hi Dan,

This was a big issue for me (esp. because one leg on one NST was dead
and I did not know it...DOH).It made it nearly impossible for me to
figure out where I was going wrong.
Here is a link to a picture I made at the time when I was trying to
explain it to the list.
http://www.jlproduction-dot-com/dualies1.jpg

What you need to do is get them phased by trying one wiring config (like
the one shown for example) and give it some current. If you get a wimpy
(or no) spark from the combined NST's then they are not phased properly.
In this case you would swap 1 and 2 or 3 and 4 BUT NOT BOTH!! Only on
one NST would you make any changes. Try it again and you should get a
good hot spark and then they will be good to go.

Hope this helps,
Jim L
http://www.jlproduction-dot-com/Tesla.html




-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com] 
Sent: Monday, September 02, 2002 5:00 PM
To: tesla-at-pupman-dot-com
Subject: Question regarding NST Phasing . . .

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<dhmccauley-at-spacecatlighting-dot-com>

Little confused over the phasing regarding NSTs (after reading the
pupman
NST PHASE FAQ)


Common sense dictates that the transformers should be wired in parallel
in
identical phase with respect to each other.  Voltage will be the same,
but
current will be double.

Would the following method be correct in determining phase???

1.  Connect both NST's to line voltage.

2.  Ground both NST Center-Taps and Chassis to AC Ground.

This is where I get confused:

Do I now connect only ONE high voltage wire to one end of one
transformer
and then touch to the opposite ends of each NST high voltage output to
determine phase?  I guess the one end of the
second NST that produces minimal arc (IN PHASE) is the one i should be
paralleling with the high voltage wire output leg i have.

Dan








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