[Amps] Is solid Cu 600VAC house wire, good for tank toroids?

[KD7QAE]

All,

While testing some cores in the shop tonight I happened to grab a hunk 
of 10AWG solid Cu insulated house wire and threw 10 turns on a T400 
core.  It sure was pretty, all red and grey with big white turns.  The 
insulation looks like it would handle much more than 600V with a heavy 
plastic (PVC?) and a thinner clear (nylon?) secondary insulation.  My 
questions are this: Has anyone hipotted this kind of wire and has anyone 
RF tested this insulation?  The conventional wisdom has you double tape 
the core with silicone or fiberglass tape and wind with a TFE sleeved 
wire.  Perhaps the use of house wire would simplify this step(?).

I am now ducking and waiting for the sound thrashing I deserve!

Tomm, KD7QAE