Electric Fence Power Probe

Price: NZ$182.61

(excl. GST; free shipping within NZ)

Note: NZ delivery typically within a week.

The Electric Fence Power Probe is a fault finder that takes you right to any electric fence short circuit.

It shows fence voltage ( how ‘hot’ the fence is), amps (an indication of the severity of any short circuit), the direction in which the fault lies, and was designed by the inventor of directional fault finders. A splash proof and impact resistant case ensures a long and reliable working life.

Like a hammer is to conventional fencing, the Electric Fence Power Probe is to electric fencing — essential!

  • Accurate fault finding — directs you right to any short circuit, not leaving you metres away.

  • Digital readout — displays voltage, current and direction to ‘high load’ faults (not just current flow).

  • Simple to use — one-touch operation, no set up or calibration, ‘straight from the box’ fault finding.

  • Wide range — 0.2 to 9.9 KV (peak) +/- 10%, 1 to 25 Amps (peak).

  • Suitable for all energisers — works regardless of type or polarity.

  • No wires or clips — no tangles, broken wires or risking getting a shock!

  • Ergonomic case — easy to carry around ready for use whenever needed, includes belt clip.

  • Long battery life — even from a standard 9V battery.

Measure the voltage and current by placing the metal bracket that protrudes from the top of the Electric Fence Power Probe over the live wire. Press the button on the front. Voltage is displayed on the left side of the screen, current on the right, with the arrows above the display indicating the direction of any short circuit.

A lower than normal voltage and higher than normal current indicates a short circuit has occurred where the live wire is earthing or shorting out. Depending on livestock type, a fence voltage less than 3500 volts (3.5Kv) probably won’t contains your stock and you need to remove some shorts, hopefully increasing your fence voltage.

Go in the direction of the arrow to find the fault. Once you start walking, forget about the direction arrow and monitor the current reading (if you follow the arrow you will only find the last fault in the system and often there are more than one! ). Where the current changes is the exact spot where the fault is — and you can tell how big it is (you may need to back track to find the exact spot). If the arrow still indicates past this fault you have more to find. At every fence intersection check each leg to see where the faults are.

No voltage indicates complete break, work back towards the energiser to find the point at which voltage reappears.

Please note that shorts less than 3 Amps may not light the arrow up as they are considered insignificant. However, you can still find them by monitoring the amps.

The Power Probe can also test your earth system. Test the earth wire, if possible more than 2 metres from the energiser. If the voltage is more than 300 volts the earth system is not adequate.

 How to use Electric Fence Power Probe diagram

If the front decal is damaged or holed replace it immediately. Failure to do so will allow water and contaminants to enter which could wreck the Power Probe

If not used for several months remove the battery. Do not pull the wires to disconnect the battery, lever the clip off with a key or screwdriver.

Although the case has a full seal, it is NOT waterproof, simply wipe with a clean cloth.

If the Power Probe is accidentally left outside for a few days, moisture will enter it through hydroscopic action. If you suspect water has entered the case do not use it. Remove the rear cover and battery and dry it out either in the sun or the hot water cupboard.

When you have had the rear case removed for battery change or drying out, on closing the case, note the position of the small metal leaf spring near the top of the circuit board. It should be positioned as shown in the picture rising above the circuit board at a 45 degree angle and finishing in a horizontal piece. If necessary reposition / lift the spring carefully.

Lower the case back directly over the leaf spring and ensure the screw touches the metal when replacing the case back.

Leaf spring alignment

The Electric Fence Power Probe can be returned to Jenquip for service or repair. Please include your return address and phone number.

Please email us for a quote on any spare parts you may require.

The most common cause of problems with the Electric Fence Power Probe is flat or poor quality batteries. If your Power Probe fails to operate, shows no readings, or shows 8.8:8.8 on the display, check the battery. If you don't have a battery tester or meter, fit a new (heavy duty or alkaline) battery and see if the problem disappears.

Changing the battery

  1. Place the Power Probe face down on the bench. Unscrew the four screws and remove the rear cover.

  2. Remove the battery. Note: Earlier models had clip-on terminals — do not pull the wires to disconnect the battery, lever the clip off with a key or screwdriver. Later models have spring terminals.

  3. Install new 9 volt heavy duty or alkaline battery (like in a smoke alarm), ensuring correct polarity.

  4. Check circuit board terminal: The small metal leaf spring near the top of the circuit board can easily be bent out of place. It should extend from the board at about a 45 degree angle with a flattened end. Lift / realign the leaf spring gently if necessary.

    Leaf spring alignment
  5. Lower the rear case back directly over the front case. Reinstall the four retaining screws.

  6. Check on a fence for correct operation.

Low Voltage

If the reading is lower than expected, or there may be no amps reading at all, then the circuit board terminal may be out of position — see remedy above.