GAP-005 Ground Adapter Plug

This Adapter is a UL approved instrument however it will not indicate:

1. Ground and neutral reversed.
2. More than one hot wire in outlet.
3. The quality of ground path.
4. Presence of multiple wiring errors.

  • Use the Ground Plug Adapter ONLY with electrical receptacles that have been previously tested using an approved circuit tester complying with CSA and or UL standards.


  • The Ground Plug Adapter is equipped with three indicating lights. The ONLY indication that is acceptable for Ground Plug Adapter use is with the two outer "CIRCUIT OK" lights energized, i.e., Lights #1 and #3 ON, Light #2 OFF.

*----------CIRCUIT OK---------*

Light #1 Yellow Light #2 Red Light #3 Clear

If any other condition exists, do not use the receptacle or the Ground Plug Adapter until tested and approved by a qualified electrician. Examples of wiring defects are not limited to the conditions described below.

1. OPEN GROUND WIRE - The equipment grounding conductor is not complete.

2. REVERSE POLARITY - The hot and the neutral circuit conductors are reversed.

3. OPEN HOT WIRE - The hot circuit conductor is open from a blown fuse, tripped circuit breaker, switch off, broken wire, etc.

4. OPEN NEUTRAL WIRE - The neutral circuit conductor is open.

5. HOT AND GROUND REVERSED - The hot circuit conductor and the grounding conductor are reversed.

6. HOT ON NEUTRAL AND HOT OPEN - The hot circuit conductor is connected to neutral terminal and the hot terminal is unwired.