Key Terminology

AC alternating current, AC (mains) power supply 110 – 120 V or 220 – 240 V.
Amp unit of current. Short for Ampere.
Capacitors used to store energy in the energizer (charger).
Current duration and magnitude of current causes the shock of the electric fence. Increasing the voltage increases current, while increasing resistance decreases current.
DC direct current, battery power supply (e.g. 12 V battery input).
Fault / Short energy loss from the fence (i.e., live wire lying on the ground, vegetation growing over the fence, etc.).
Ground System the rod(s) in the ground connected to the ground terminal on the energizer (charger).
Joule unit of energy. One joule is one watt of power for one second.
Lead out Wire section of underground cable or wire that carries the electrical current from the energizer (charger) to the fence.
Live the current-carrying wire connected to the charger fence output terminal.
Ohm unit of resistance.
Output Energy effective energy delivered by the energizer (charger).
Pulse brief electrical current given by an energizer (charger), approximately 0.0003 seconds per pulse.
Resistance what causes loss of power and voltage on the fence.
Stored Energy energy accumulated in the storage capacitor(s) in between output pulses.
Watt unit of power. One watt is one joule per second.
Volt unit of electrical pressure. Sometimes it is stated as “kV” or kilovolts which is equal to 1,000 volts.
Voltage electrical pressure causing current to flow.