Cascading 4500 vac transformers

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

Original poster: "Virtualgod" <mike.marcum-at-zoomtown-dot-com> 

I ran across these 1800 VA 115v-4500,660v transformers from C & H sales and 
was thinking of cascading a few. Would there be a practical limit voltage 
wise? Would corona start eating the outer transformers farthest from the 
midpoint ground (at say +/- 100kv, just picking numbers out of the air)? 
These look alot more powerful than the nst's being sold on ebay for the 
same price.