Troubleshooting My Electric Fence

Last week I went to check our three reel system that surrounds our garden and hens.  There was max 3000v on each line – this is not enough power.  I couldn’t understand it .  I really need 6000-9000v to keep the cattle and sheep out.  Nothing had been changed or moved anything and as far as I could see there were no faults.  I will go through the checks I did below to trouble shooting my electric fence and so in-turn this will show you how to get the best