legrand 340557 GFCI Receptacle Instruction Manual

June 4, 2024
Legrand

legrand logo Pass & seymour
P.O. Box 4822
Syracuse, NY 13221800-223-4185
Part No. 340557 Rev. C

Installing and Testing a GFCI Receptacle

15A/ 120V /60Hz
20A /120V /60Hz
Please read this leaflet completely before getting started.
CAUTION

  • To prevent severe shock or electrocution, always turn the power OFF at the service panel before working with the wiring.
  • Use this GFCI receptacle with copper or copper-clad wire. Do not use it with aluminum wire.
  • Do not install this GFCI receptacle on a circuit that powers life support equipment because if the GFCI trips, it will shut down the equipment.
  • For installation in wet locations, protect the GFCI receptacle with a weatherproof cover that will keep both the receptacle and any plugs dry.
  • Must be installed in accordance with national and local electrical codes.

What is a GFCI?

A GFCI receptacle is different from a conventional receptacle. In the event of a ground fault, a GFCI will trip and quickly stop the flow of electricity to prevent serious injury.
Definition of a ground fault:
Instead of following its normal safe path, electricity passes through a person’s body to reach the ground. For example, a defective appliance can cause a ground fault.
A GFCI receptacle does not protect against circuit overloads, short circuits, or shocks. For example, you can still be shocked if you touch bare wires while standing on a non-conducting surface such as a wood floor.

The GFCI’s features

FRONT VIEW

legrand 340557 GFCI Receptacle FIG 1

BACK VIEW

legrand 340557 GFCI Receptacle FIG 2

Should you install it?

Installing a GFCI receptacle can be more complicated than installing a conventional receptacle. Make sure that you:

  • Understand basic wiring principles and techniques.
  • Can interpret wiring diagrams.
  • Have circuit wiring experience.
  • Are prepared to take a few minutes to test your work, making sure that you have wired the GFCI receptacle correctly.

If you do not fully understand these instructions, you should seek the assistance of a qualified electrician.

LINE vs. LOAD

A cable consists of 2 or 3 wires.
legrand 340557 GFCI Receptacle FIG 3 LINE cable:
Delivers power from the service panel (breaker panel or fuse box) to the GFCI. If there is only one cable entering the electrical box, it is the LINE cable. This cable should be connected to the GFCI’s LINE terminals only.
LOAD cable:
Delivers power from the GFCI to another receptacle/outlet in the circuit. This cable should be connected to the GFCI’s LOAD terminals only. The LOAD terminals are under the yellow sticker. Do not remove the sticker at this time.

Turn the power OFF

Plug an electrical device, such as a lamp or radio, into the receptacle on which you are working. Turn the lamp or radio on. Then, go to the service panel. Find the breaker or fuse that protects that receptacle. Place the breaker in the OFF position or completely remove the fuse. The lamp or radio should turn OFF.
legrand 340557 GFCI Receptacle FIG 4Next, plug in and turn ON the lamp or radio at the receptacle’s other outlet to make sure the power is OFF at both outlets. If the power is not OFF, stop work and call an electrician to com- plete the installation.

Identify cables/wires

IMPORTANT:
Do not install the GFCI receptacle in an electrical box containing (a) more than 4 wires (not including the ground wires) or (b) cables with more than two wires (not including the ground wire). Contact a qualified electrician if either (a) or (b) is true.

  • If you are replacing an old receptacle, pull it out of the electrical box without disconnecting the wires.
  • If you see one cable (2-3 wires), it is the LINE cable. The receptacle is probably in position C (see diagram to the right). Remove the receptacle and go to step 7A.
  • If you see two cables (4-6 wires), the receptacle is probably in position A or B (see diagram to the right). Follow steps a-e of the procedure to the right.

Procedure: box with two cables (4-6 wires)
(a) Detach one cable’s white and hot wires from the receptacle and cap each one separately with a wire connector. Make sure that they are from the same cable.
(b) Reinstall the receptacle in the electrical box, attach the wall plate, then turn the power ON at the service panel.
(c) Determine if power is flowing to the receptacle. If so, the capped wires are the LOAD wires. If not, the capped wires are the LINE wires.
(d) Turn the power OFF at the service panel, label the LINE and LOAD wires, then remove the receptacle.
(e) Go to step 7B.
Placement in the circuit:
The GFCI’s place in the circuit determines if it protects other receptacles/outlets in the circuit.
Sample circuit:
legrand 340557 GFCI Receptacle FIG 5
Placing the GFCI in position A will also provide protection to “load side” receptacles/outlets B and C. On the other hand, placing the GFCI in position C will not provide protection to receptacles/outlets A or B. Remember that receptacles/outlets A, B, and C can be in different rooms.

Connect the wires (choose A or B)…only after reading other side

completely

A: One cable (2 or 3 wires) entering the box
legrand 340557 GFCI Receptacle FIG 6
About wire connections:
legrand 340557 GFCI Receptacle FIG 8 Connect the LINE cable wires to the LINE terminals:

  • The white wire connects to the White terminal (Silver)
  • The black wire connects to the Hot terminal (Brass)

Connect the ground wire (only if there is a ground wire):

  • For a box with no ground terminal (diagram not shown): Connect the LINE cable’s bare copper (or green) wire directly to the ground terminal on the GFCI receptacle.
  • For a box with a ground terminal (diagram shown above): Connect a 6-inch bare copper (or green) 12 or 14 AWG wire to the ground terminal on the GFCI. Also, connect a similar wire to the ground terminal on the box. Connect the ends of these wires to the LINE cable’s bare copper (or green) wire using a wire connector. If these wires are already in place, check the connections.

Complete the installation:

  • Fold the wires into the box, keeping the ground wire away from the White and Hot terminals. Screw the receptacle to the box and attach the wall plate.
  • Go to step 8.

B: Two cables (4 or 6 wires) entering the boxlegrand 340557 GFCI
Receptacle FIG 7

About wire connections: legrand 340557 GFCI Receptacle FIG
8
Connect the LINE cable wires to the LINE terminals:

  • The white wire connects to the White terminal (Silver)
  • The black wire connects to the Hot terminal (Brass)

Connect the LOAD cable wires to the LOAD terminals:

  • Remove the yellow sticker to reveal the LOAD terminals
  • The white wire connects to the White terminal (Silver)
  • The back wire connects to the Hot terminal (Brass)

Connect the ground wires as shown above (only if there is a ground wire):

  • Connect a 6-inch bare copper (or green) 12 or 14 AWG wire to the ground terminal on the GFCI. If the box has a ground terminal, also connect a similar wire to the ground terminal on the box. Connect the ends of these wires to the LINE and LOAD cable’s bare copper (or green) wire using a wire connector. If these wires are already in place, check the connections. “

Complete the installation:

  • Fold the wires into the box, keeping the ground wire away from the White and Hot terminals. Screw the receptacle to the box and attach the wall plate.
  • Go to step 8.

Test your work

Why perform this test?

  • If you miswired the GFCI, it may not prevent personal injury or death due to a ground fault (electrical shock).
  • If you mistakenly connect the LINE wires to the LOAD terminals, the GFCI will still operate like an ordinary receptacle, but it will not interrupt a ground fault.

Procedure:
(a)
Turn the power ON at the service panel. Press the RESET button fully. The RESET button should stay in. If the RESET button does not stay in, go to Troubleshooting. If the RESET button stays in, plug a lamp or radio into the GFCI (and leave it plugged in) to verify that the power is ON. If there is no power, go to Troubleshooting.
(b) Press the TEST button in order to trip the device. This should stop the flow of electricity, making the radio or lamp shut OFF and the GFCI’s red Trip Indicator Light (if present) come on. Note that the RESET button will pop out. If the power stays ON, go to Troubleshooting. If the power goes OFF, you have installed the GFCI receptacle correctly. To restore power, press the RESET button.
(c) If you installed your GFCI using step 7B, plug a lamp or radio into surrounding receptacles to see which one(s), in addition to the GFCI, lost power when you pressed the TEST button. Do not plug life-saving devices into any receptacles that lost power. Place a “GFCI Protected” sticker on every receptacle that lost power.
(d) Press the TEST button (then RESET button) every month to assure proper operation.
legrand 340557 GFCI Receptacle FIG 9

TROUBLESHOOTING

Turn the power OFF and check the wire connections against the appropriate wiring diagram in steps 7A or 7B. Make sure that there are no loose wires or loose connections.  also, it is possible that you reversed the LINE and LOAD connections. LINE/LOAD reversal will be indicated by power remaining ON at the GFCI and by the RESET button not staying in when pressed. Reverse the LINE and LOAD connections if necessary. Start the test from the beginning of step 8 if you rewired any connections to the GFCI.

LIMITED ONE-YEAR WARRANTY

Pass & Seymour will remedy any defect in workmanship or material in Pass & Seymour products that may develop under proper and normal use within one year from date of purchase by a consumer:
(1) by repair or replacement, or, at Pass & Seymour’s option, (2) by the return of an amount equal to the consumer’s purchase price. Such remedy is IN LIEU OF ANY AND ALL EXPRESSED OR IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Such remedy by Pass & Seymour does not include or cover the cost of labor for the removal or reinstallation of the product. ALL OTHER FURTHER ELEMENTS OF DAMAGE (INCIDENTAL OR CONSEQUENTIAL DAMAGES) FOR BREACH OF ANY AND ALL EXPRESSED OR IMPLIED WARRANTIES INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXCLUDED HEREBY. (Some states do not allow disclaimers or exclusion or limitation of incidental or consequential damages, so the above disclaimer and limitation or exclusion may not apply to you.) ANY IMPLIED WARRANTIES INCLUDING WHERE REQUIRED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE SHALL BE LIMITED TO THE ONE YEAR PERIOD SET FORTH ABOVE. (Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.)
To ensure safety, all repairs to Pass & Seymour products must be made by Pass & Seymour, or under its specific direction. The procedure to obtain performance of any warranty obligation is as follows: (1) Contact Pass & Seymour, Syracuse, New York 13221, for instructions concerning return or repair;
(2) return the product to Pass & Seymour, postage paid, with your name and address and a written description of the installation or use of the Pass & Seymour product, and the observed defects or failure to operate, or other claimed basis for dissatisfaction. This warranty gives you specific legal rights and you may also have other rights which vary from state to state.

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