Instructions
Prior to using the GT-10GFI tester, first consult the GFCI manufacturer’s installation instructions to determine that the
GFCI is installed in accordance with the manufacturer’s specification. Check for correct wiring of the receptacle and
all remotely connected receptacles on the branch circuit. Then operate the test button on the GFCI installed in the
circuit. The GFCI must trip. If it does not trip, do not use the circuit, and consult a qualified electrician. If the GFCI
does trip, reset the breaker.
Note: Test the GT-10GFI on a known live circuit before each use. If the unit does not function as expected,
call Greenlee at 800-435-0786.
1. Unplug all appliances or equipment on the circuit being tested.
2. Plug the GT-10GFI into any standard 110 V AC receptacle (NEMA 5-15R).
3. Compare the illuminated lamps on the GT-10GFI to the code key located on the product or in the table above.
Note: If the LEDs indicate anything other than the “Correct Wiring”, have the wiring evaluated by a
qualified electrician.
4. If the receptacle indicates the “Correct Wiring”, depress the GFI button for a minimum of 6 seconds. When the
button is depressed, the red lamp will momentarily glow brighter, and then all lamps will cease to glow when the
GFI trips.
Note: If the circuit breaker does not trip, it suggests a problem with the wiring to the GFCI or a faulty GFCI
device. Have the breaker evaluated by a qualified electrician.
5. Reset the circuit breaker. Repeat the above steps for every receptacle on the circuit, including remotely connected
receptacles on all branches.
Note: The GT-10GFI is not a comprehensive diagnostic instrument. The GT-10GFI is a simple instrument
designed to detect nearly all, probable and common, improper wiring conditions. It will not detect a combination
of defects. It will not indicate the quality of ground or reversal of grounded and grounding conductors. It will not
detect two hot wires in a circuit. Circuit capacitance may indicate continuity in an open circuit. Failure to unplug
appliances or equipment on the circuit being tested can cause erroneous readings.
Hot / Ground Reverse
Hot / Neutral Reverse
Correct
Open Ground
Open Neutral
Open Hot
FAULT
Hot and ground contacts interchanged
Hot and neutral contacts interchanged
Receptacle is wired correctly
Ground contact not connected
Neutral contact not connected
Hot contact not connected
REASON FOR WIRING FAULT
INDICATOR
KEY:
Indicator Lit
Indicator Not Lit
Hot Contact (black wire)
Neutral Contact (white wire)
Ground Contact
(green or uninsulated wire)
Typical 3-Wire NEMA 5-15R
Receptacle (polarized)
Description
The Greenlee GT-10GFI Circuit Tester is
intended to verify correct wiring of any
standard three-wire 110 volt receptacle. It
is also used to verify the integrity of a
three-wire GFI/GFCI (ground fault
interrupter/ground fault circuit
interrupter).
Electric shock hazard:
• Contact with live circuits could result in severe injury
or death.
• The GT-10GFI cannot properly test two-wire circuits.
GT-10GFI Circuit Tester
Lifetime Limited Warranty
Greenlee Textron Inc. warrants to the original purchaser of these goods for use that these products will be free from
defects in workmanship and material for their useful life, excepting normal wear and abuse. This warranty is subject to the
same terms and conditions contained in Greenlee Textron Inc.’s standard one-year limited warranty.
For all Test Instrument repairs, contact Customer Service at 800-435-0786 and request a Return Authorization. An
Approved Authorization including shipping label and instructions will be sent.
For items not covered under warranty (such as items dropped, abused, etc.), a repair cost quote is available upon
request.
Note: Prior to returning any test instrument, please check replaceable batteries or make sure the battery is at full charge.
Garantía limitada válida durante la vida útil del producto
Greenlee Textron Inc. le garantiza al comprador original de estos bienes de uso, que los mismos estarán libres de
defectos de materiales y fabricación durante su vida útil; excepto en el caso de que sean maltratados o hayan sufrido el
deterioro normal. Esta garantía está sujeta a los mismos términos y condiciones de la garantía estándar limitada válida
por un año, otorgada por Greenlee Textron Inc.
Para reparaciones de todo instrumento de verificación, comuníquese con el Departamento de Servicio al Cliente al 800-
435-0786 y solicite una autorización de devolución. Se le enviará una Autorización Aprobada incluyendo una etiqueta de
envío e instrucciones.
Puede obtener, previa solicitud, una cotización de precios de reparación para aquellos artículos que no están cubiertos
bajo esta garantía (los que se han dejado caer o han sido maltratados).
Aviso: Antes de devolver un instrumento de verificación, revise si las pilas están bajas y es necesario reemplazarlas.
Garantie à vie limitée
La société Greenlee Textron Inc. garantit à l’acheteur d’origine de ces produits que ces derniers ne comportent aucun
défaut d’exécution ou de matériau pour la durée de leur vie utile, sauf l’usure normale. Cette garantie est assujettie aux
mêmes conditions que celles contenues dans les modalités et conditions de la garantie limitée standard d’un an de
Greenlee Textron Inc.
Pour toutes les réparations d’instruments de mesure, appeler le service après vente au
800 435-0786 et demander une autorisation de retour. Une autorisation approuvée, incluant
une étiquette d’expédition et des instructions sera envoyée.
Lorsque les articles ne sont pas protégés par une garantie (comme si l’appareil tombe, s’il est soumis à un usage abusif,
etc.), une soumission pour le prix de réparation sera présentée sur demande.
Remarque : Avant de renvoyer un appareil de mesure, vérifier les piles remplaçables ou s’assurer que la pile est chargée
au complet.
For technical assistance: 800-435-0786
Greenlee / A Textron Company
4455 Boeing Drive, Rockford, IL 61109-2988 USA
Customer Service (International): 815-397-7070 • Fax: 815-397-9247
Customer Service (North America): 800-435-0786
USA Fax: 800-451-2632, 815-397-1865 • Canada Fax: 800-524-2853
Greenlee Textron Inc. is a subsidiary of Textron Inc.
www.greenlee.com
52021113
© 2005 Greenlee Textron Inc.
8/05
