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I had this problem also. I opened the Z100 to investigate and found that the "commons" were not common - that is the accessory "positive" was internally attached to the track "negative." When I connected the switch, the accessory "positive" was connected to track "negative" and tripped the Z1000 breaker
A quick test: with the Z1000 plugged in without any output connected (track or accessories) use a short length of wire and connect the two commons together, if the breaker trips, one of the commons is internally connected to the other positive. I opened up a second Z1000 (one I knew worked correctly) to compare the wiring. A little rewiring fixed the problem for me.
Bob
Originally Posted by MP147:
I opened the Z100 to investigate and found that the "commons" were not common - that is the accessory "positive" was internally attached to the track "negative." When I connected the switch, the accessory "positive" was connected to track "negative" and tripped the Z1000 breaker
BobWould this Z1000 wiring be a safety problem that would affect this MTH transformer's UL (Underwriters Lab) approval and possibly necessitate a recall?
I have six Z1000 transformers only one had a problem - I think was a simple wiring mistake.
This is a known issue with one run of Z-1000 bricks. I fixed mine by swapping the polarity of one output to make them match.
I don't recall which output is wrong, you need another brick to compare to for polarity.
This is illuminating. Thanks! Powering realtrax switches using other than track power is always a good idea. It makes trouble shooting easier.
