Greenlee 50121251 GFI Circuit ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$86.07
$36.07
Greenlee 50121251 GFI Circuit Tester

Greenlee 50121251 GFI Circuit Tester

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Model: 50121251
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$86.07
$36.07
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Manufacturer Resources

Product Specs

Application:
Use To Troubleshoot 120 VAC Grounded Outlets
Country Of Origin:
CN
Product Height:
1.200 IN
Product Length:
6.700 IN
Product Model:
GT-10GFI
Product Type:
Circuit Tester
Product Width:
1.900 IN
Standards:
ETL
Voltage Rating:
120 VAC
Volume:
15.275999999999998 CI
Department:
Electrical
Product Subgroup:
Testing & Measurement

Greenlee 50121251 – Frequently Asked Questions

1) What can the Greenlee GT-10GFI circuit tester actually check on an outlet?
The Greenlee 50121251 (model GT-10GFI) is built to troubleshoot 120 VAC grounded outlets. You plug it into the receptacle and use it to check wiring condition on standard grounded 120-volt circuits, including tripping GFCI protection on a GFI receptacle. It is rated for 120 VAC, so it is not a tool for 240-volt circuits or ungrounded two-prong receptacles.
2) Will a GFI circuit tester work on a 240V circuit or an old two-prong outlet?
No. The Greenlee 50121251 is a 120 VAC tester intended for grounded outlets only. On a two-prong ungrounded receptacle there is no equipment ground for it to reference, and it should not be used on 240-volt circuits. For those openings you need a different instrument.
3) Is a plug-in GFI tester enough, or do I need a multimeter for outlet troubleshooting?
A plug-in tester like the Greenlee GT-10GFI answers the fast questions on 120 VAC grounded receptacles: is the wiring right, and does the GFCI trip. It does not give you a numeric voltage or resistance reading. Property maintenance and MRO crews walking a building to verify outlets get their answer from the plug-in tester; if you need to measure actual voltage or chase a fault back to the panel, pair it with a multimeter.
4) How big is the Greenlee GFI outlet tester, and will it fit in a pouch?
It measures 6.700 inches long, 1.900 inches wide and 1.200 inches high, roughly 15.28 cubic inches of volume. That is a slim plug-in body that drops into a tool pouch or a service van bin without taking a slot.
How fast can I get the Greenlee 50121251 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Greenlee 50121251 come with a warranty?
Absolutely. The Greenlee 50121251 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Greenlee 50121251?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Greenlee 50121251 from ZenSupply?
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