Theory, Design, and Construction of Tesla Coils Safety Warning Tesla coils and their support equipment are extremely dangerous. There are many known and unknown dangers associated with this type of equipment.
Tesla coils use and produce extraordinarily high voltages and currents.
Output voltages for small coils are typically in the range of 500,000 to 1,000,000 volts. Currents of 1000 to 5000 amperes may be present in the input circuits. Under no circumstances should one come into contact with these voltages and currents. In all cases the voltages and currents used in Tesla coils are considered far beyond lethal levels. Please see special note.