Lighting products are an important part of our business! We offer a limited selection of lighting  components from simple floodlights to Airport VASI lights, along with portable generator sets to power them. We also have large Mobile and Stationary Generator Sets. Call us for your needs ! ! ! !

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Groban Supply Co. Transformer Equipment 

Power Distribution Transformer

This is a used-in-the-box, Jefferson Electric - Power Distribution Transformer, catalog number 345-205, Military number Mil-T-6476A, Type F-1. The transformer steps the voltage down from 4000 volts to 120 volts, at 500 VA, 60 Hz. and is designated "Runway Overrun Lighting Transformer".

The current is sent down the runway at high voltage (4000 volts) to minimize "line loss" and facilitate the use of smaller gauge wire. This transformer is used to step the voltage back down to 120 volts. I suppose this could serve well for a ski slope or race track lighting for the same reasons. Unconfirmed possible uses would be for building a "jacobs ladder" (tesla coil) or some neon applications. If it is used to step the voltage up from 120 volts to 4000 volts, some form of (current limiter" should be in series with the input voltage.

Be advised that we have received two emails from eBayers advising that this transformer will not work in reverse. An eBayer was kind enough to send us the definitive article on why it won't work that way - so we pass info this on. Thanks "eBayer"! The transformer and the electrical leads are sealed in rubber. Overall dimensions: 15" high x 7" wide. Crated shipping weight is 60 lbs. This is an excellent buy.

"YOUR PRICE PER TRANSFORMER IS $35.50"! .

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