E-Fence 3500 Installation



Fence Wire - The fence wire must make a continuous loop around your property for your system to operate. The radio signal is delivered from the terminal of the transmitter, through the fence wire, and then back to the other terminal on the wall-mounted transmitter. When this is accomplished, the fence continuity light will emit a constant red light. Adversely, if you do not have wire continuity in your layout, the fence continuity light will turn off and an audible warning tone will emit from the transmitter.

Prior to burying your wire, test your containment system using your receiver to insure your system is working properly and the receiver activates. The wire should be buried approximately 4-6 inches into the ground or deep enough to protect it from being damaged by a lawnmower or any other machinery.

Wire Placement


CAUTION - Before you install your fence wire, contact the utility company to mark the utility lines on your property before you begin digging.  Be sure to test your wire layout above ground before permanent installation begins. Carefully choose the areas in which you want to contain your dog.  A diagram may be helpful in predicting unforeseen obstacles.  (Please refer to the diagrams below.)


When creating a Front Boundary Only, Fence Front Yard Only, or Front Boundary with Existing Fence type of design, THE TWO PARALLEL E-FENCE WIRES MUST BE 6-10 FEET APART to avoid any signal interference.

*Please note the diagrams are not drawn to scale. Single loop systems must keep 6-10 feet of distance between the wires as well.

Front Boundary Only

Fence Front Yard Only

Front or Back Access

Basic Loop with Garden

Front Boundary with Existing Fence

Double Loop with Passage

Keep wires ~ 6ft. apart to avoid signal interference.


The Dogtra EF-3500 containment system includes 500 feet of boundary wire and 50 training flags. Additional flags and wiring can be purchased through the Dogtra Company. The figures above are indicated for a rectangular layout. Actual flag/wire requirements may vary depending on the layout you've chosen.



Finding a Wire Break

1.) Go to the E-FENCE 3500 wall-mounted transmitter and disconnect the two boundary wire leads from the red connector tabs.

2.) Get the Underground Cable Wire Locator transmitter:

  • Connect the red alligator clip to the end of one of the E-FENCE 3500 boundary wires.  
  • Connect the black alligator clip to the end of the ground wire that is not in the ground.   

3.) Turn the Underground Cable Wire Locator transmitter from “OFF” to “Cable Scan” and leave the transmitter connected to the wires.

4.) Get the Underground Cable Wire Locator receiver and walk slowly along the path of the boundary wire. You should hear a whirling/static noise where the boundary wire is intact and no whirling noise where the break is located.

*Instructions based on the Noyafa NF-816-C Underground Cable Wire Locator. Other similar Underground Cable Wire Locators can be used as well to detect the breakage. However, the instructions may vary based on the Underground Cable Wire Locator used.


Fixing the Break

Once you have found the break, cut out the damaged area and use a weatherproof gel style wire splicer to reconnect the wires. If the break is large or if you cannot identify the break location, you may need to splice in some extra wire to bypass the area that is damaged.


Additional Information

EF-3500 Manual

EF-3500 Training Book