The SPIKE Tool - Don't Guess...SPIKE it!
SPIKE Tool information, repair and order

The SPIKE Tool for underground cable


The SPIKE Tool

Cable maintenance personnel must be able to positively ensure an underground electric power cable is de-energized prior to cutting.

Responsible electric power system operating and maintenance procedures stipulate that prior to cutting underground or buried (hidden termination points) electric power cable, it is spiked to ensure it is de-energized.

SPIKE Tool is designed as a safety device for maintenance linemen to prevent injury or loss of life.

SPIKE Tool is designed for single conductor cable.

Cable Spiking Tool Actuation
SPIKE Tool is a low velocity, charge-actuated device which pushes a 2" spike into the cable to verify it's de-energized prior to cutting. SPIKE Tool is designed to be operated remotely at a distance of 35 feet to prevent potential injury.

The unique benefits provided by SPIKE Tool are:

SPIKE Tool provides positive assurance that the cable is not energized

SPIKE Tool is operated remotely thereby removing the cable maintenance personnel from danger if a live cable is spiked

SPIKE Tool can be used on thermoplastic or thermosetting insulation as well as oil impregnated paper insulation

SPIKE Tool can be used on aluminium and lead sheathed cable and interlock armoured cables

SPIKE Tool is designed to ensure the spike pierces the cable directly through it's center core

SPIKE Tool creates minimal cable damage

SPIKE Tool is not cumbersome to use in the field. It weighs only 7 lbs.

SPIKE Tool is fast and easy to operate

A larger tool accommodates cable sizes up to 3-1/2" OD.


SPIKE Tool is a safety tool designed for the sole purpose of providing cable maintenance personnel with positive assurance that a power cable is safe to cut. 

Unlike overhead electric power distribution systems, underground or hidden power cable systems cannot be visually traced back to an open point to ensure the cable is isolated.

If, for example, a new transformer must be cut into an existing feeder, a lineman positioning the new transformer between two termination points would be required to cut into a cable. Upon opening a trench, the lineman could see a number of cables identical in appearance. It is difficult to determine which one of the group has been isolated at the termination points.

"As constructed" drawings are often used as a means of identifying cables between termination points but this does not constitute a positive identification. If a trench is dug between two termination points for maintenance purposes, lineman must be certain before they cut the cable that it is de-energized.

As an overall procedure it is first recommended the cable be identified by the use of "as constructed" drawings and an electronic signal (to pulse the cable) placed on the cable at the termination point. The "pulsed" cable is identified at the trench location.

After the cable to be cut has been identified as closely as possible, the last step should be to spike the cable before it is cut. If switching procedures were incorrectly followed or if "as constructed" drawings are in error, cutting a live cable in a trench can be lethal.

Don't Guess...SPIKE it!

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SPIKE Tool Inc.
Contact Ron Mock, President
General inquiries:
25 Broadway Ave, Toronto, ON M4P1T7 Canada