Mains voltages, 110V or 240V can kill you! Everyday household        appliances are built with protection, fuses and earth wires. The control systems for your project must also be designed and built with fuses and earthing - all exposed metal MUST be earthed and a correctly rated fuse MUST be fitted.

High Voltages present in transformers, tank capacitors, spark gaps and other components can kill you! Never touch these components when mains power is ON! Even after power is disconnected do NOT touch until you are sure the energy remaining is fully dissipated (by grounding everything out).

Be aware of the possibility of Fire. Never run any  project near flammable substances. The output could travel through wood etc. and heat it up to the point of ignition.

Electrical discharges in air cause chemical reactions which produce toxic gasses such as ozone and oxides of carbon and nitrogen. Prolonged exposure to these gasses can cause irritation to the lining of the lungs and to eyes. Never operate any Electrical Discharge Device in a confined space without suitable ventilation.  Spark gaps produce a lot UV radiation; so never stare at a running gap.

**Pacemakers **can be affected by the Electromagnetic Field generated around Resonant Transformers (Ex. Ignition Coils, Tesla Coils). Follow your manufacturer's advice and keep clear.

Tesla Coils and other Arc producing devices are Very Loud! Always Wear suitable ear protection.