Electric Fence 'Monitor'

GarryinNC

Well-known Member
Someone asked a while back, I am not sure on which forum, about a light or a way to monitor power on an electric fence. I posted some pictures below of a device that we use, and it is very simple. An 18" T-8 flourescent tube with some wires soldered onto it.

Our fence loops around the pasture and returns to the barn, about 75 feet from where it starts. We hung it on a corner, between the last two sections of fence, instead of a jumper across the corner. You do not ground it, just hang it on a 'broken' section of the hot wire. and it will light up when the fence is energized as current passes through it.

If it was in the 'front end' of the fence, nearer the box, I don't know if you would lose some energy on the rest of the fence or not. I will bet '36 Coupe' will know. The idea came from "Farm Show" magazine.
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A wire is soldered across both terminals at each end. My auto focus did a better job on the yellow flowers, than on the subject tube!

I can hear our box ticking too, even when the fence is grounded out. With this, we can look out at night and at least know it is making a complete circuit.
 
The energy spent lighting the tube means there"s that much LESS energy going out to the fence to zap errant critters. But I"m sure it looks nice!
 
A good fencer has enough power to lite the tube.A voltmeter test will prove it.Early models had a neon light that took power from the output thru a resistor.In any case the tube heaters are not in use so I cant see any reduction in output power.It may tame the voltage spikes that cause problems.Grass puts a far greater load on the fencer.
 

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