This isn't so much of an experiment, but just an attempt to show the power of a microwave oven transformer and how to operate it.

*****EXTREMELY DANGEROUS - VERY HIGH CURRENT - DO NOT ATTEMPT*****

Quite A Simple Set Up

An MOT arc

In reality the arc could be drawn out quite a greater distance but  the fact is that the longer the arc is drawn out, the more current it requires.  Circuit breakers only allow so much current to be drawn from a  wall socket  before they trip, so lets just say I've had a few tripped breakers...