Neon sign

Randyleprechaun

Hi.

What voltage is typically present on a neon sign ie. What voltage is on the secondary of the transformer.

Just wondering what kind of meter ill need to check one. Will fluke 1652 suffice.

The transformer in question makes a clicking nose and the sign goes off seconds after turn on.

Thanks

brightspark

It depends on the sign, but it's typically in the 5-15 KILOVOLT range, so your meter won't do..

liveandnetural

the voltage is calculated on the lenght of the glass neon filled tubing
a quick rule of tumb is 600 to 800 volts per foot but that depends on the gas and tubing diameter

http://neonshop.com/calc/index.html

most indoor point of sale signs will be between 1000v to 3000v outdoor larger ones 2000v up to 10000v

DO NOT use a fluke 1652 to test the out going side of a neon tranformer . it will blast it to bits

most of the transformers supplied in the last ten years have a open circuit and earth leakage built in sounds like its the neon tubing.(is it all one or seprate letters)


neon is dangrous stuff
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.