Primary/NST case coupling effects

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

Original poster: Thomas <tom-at-pwrcom-dot-com.au> 

Does situating the earthed metallic case of a large NST below the primary of
a TC have much of an effect on:

1) Changing the resonant frequency of the primary

2) Changing the coupling

3) Inducing eddy currents into the NST case

4) Inducing RF into the NST windings?

Just wondering.

Tom L.