NST's in parallel

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Drake Schutt" <drake89@xxxxxxxxx>

Hello all,

I am a bit curious about wiring neon sign transformers in 
parallel.  All i know is that you connect the cases together and 
connect the positive and negative leads together (there's probably 
more to it than that).  Also it has been said that it is best if the 
NSTs are the same voltage, amperage, brand name, etc.  Is it possible 
to wire up some NSTs in parallel with different voltage and amperage 
ratings?  If so how would you calculate the total wattage?  What 
about the same voltage/amperage transformers but different brands?

any response is appreciated as always,
Drake