PHASING TRANSFORMERS

Connect the U posts of the two transformers together.  Run the right side handle on each transformer up to around 10 volts.  Measure between the two D posts with an AC meter.  You should read a very low voltage if they're phased properly.  If not, flip one of the power plugs.

You can also use an 18 volt bulb instead of the voltmeter, just make sure you don't to very high on either handle.  If the bulb is very dim or out, they're phased correctly.  If the bulb is bright, they're out of phase.

After you phase them, mark the common side on both plugs so youll know in the future how to plug them in in phase. I wrap mine with a light color tape and then mark with a black marker.

Thanx guys - 

A good idea is...get a three gang work box.Install 2 duplex outlets fed by a 20 amp switch.Your ZW's never get unplugged.

Paul,

   I have been using gunrunnerjohns 18 volt light bulb test for years on my ZW's & KW's.  I even use a wire nut on each end of the light bulb socket wires.  Remember all you need is about 10-12 Volts from the ZW handles to do the phase test.  If the light bulb comes on bright as you turn up the voltage, you know the transformers are out of phase.  The bulb should be dimley lit if the transformers are in Phase.

I mark the side of the plug with white marker coming from both the ZW's that gets placed into the right female section of the wall plug.   Sense my ZW's are my secondary transformers, they must all match my primary Z4k also, and they must have 10 Amp breakers to protect the DCS TIU.

PCRR/Dave

Thanx Dave - you guys are really helpful!