Safety
- Electrocution – The shock from a neon sign transformer could be lethal. The high voltage allows a large current to flow, even with light contact against dry skin. The transformer is current-limited, but typically to a level well above the threshold for ventricular fibrillation. Disconnect power to the transformer before servicing. Use appropriate insulation around connections; typical insulation, including standard electrical tape and most insulated wire, is rated only for much lower voltages.
- UV Light – The ultraviolet light emitted from the high voltage electrical arc can be harmful to ones eyes. It is recommended that the arc be viewed through the appropriate welding goggles or at the very least a high quality pair of sunglasses.
- Ozone – the production of ozone can be noticeable when there are problems with a luminous tube transformer installation. Ozone usually indicates failed secondary wiring, loose connections, high capacitance coupling, or a failing transformer.
- Fires – The arc length on 15 kV is in excess of 2 inches. Keep wiring inside grounded 1/2" metallic conduit (watertight if applicable). Be sure to use proper enclosures for transformers. Stray electric arcs will ignite combustible materials.
Read more about this topic: Neon-sign Transformer
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