These substances can cause very serious and long-term heath problems and fatal cancers. Components used in Tesla coils can explode with great violence. High voltage capacitors especially can store a tremendous amount of energy and can fail catastrophically. Always wear eye protection and physically shield energy storage components. Tesla coil circuits can store lethal voltages long after external power sources are removed.
Circuits can spontaneously become energized without warning.
Power supplies and especially high voltage capacitors must be discharged before approaching this type of equipment. Tesla coils always produce intense radio frequency interference. Tesla coils can easily destroy any type of electronic equipment in the area or connected through the common AC wiring. This includes Computers, Televisions, etc. In all cases these are either faked or done under very special circumstances.