Installation Guide
Green (G)
Black (Y or X)
White (W)
Red (X or Y)
FIGURE 1
20 or 30 AMPERE LOCKING PLUGS AND CONNECTORS
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Customer Service Dept. 
Direct: (414) 434-2220
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1. CABLE: Provide a cable of applicable ampacity, service and temperature ra�ng suitable 
for the condi�ons of use and loca�on. The plugs and connectors are designed for use 
with 3, 4 or 5 conductor cables with a diameter from .375’’ to 1.156” (12/3 SJ through 8/5 S). 
2. CORD CLAMP PREP: Gray colored cord clamp inserts preinstalled for use with .550” 
to .875” cable diameter. If you need other sizes, please contact us.
3. CABLE PREP: Remove out jacket 2” and strip each individual conductor 5/8” as shown 
in Figure 1 Below. Make sure the wire is clean and a bright copper color. Do not solder 
the ends of the wire. Feed the cable end through the housing.  
4. ASSEMBLY: Select the proper plug or connector for your applica�on.  Loosen the screws 
from the face and remove the assembly from the outer body.
FOR DEVICES WITH A W TERMINAL:
Insert the green wire into the terminal with the green colored screw. (G)
Insert the white wire into the terminal with the silver colored screw. (W)
Insert the reamaining wires (white, red, black, etc.) into the terminals marked X, Y or Z.  
FOR DEVICES WITHOUT A W TERMINAL:
Insert the green wire into the terminal with the green colored screw. (G)
Insert the remaining wires (white, red, black etc.) into the terminals marked X, Y or Z.
When making connec�ons, make certain they are secure, properly insulated and there 
are no stray wire strands outside the terminals. Tighten the terminal screws to 12-16 
in-lbs torque. Assemble the housing over the device body; the keyway in the housing 
and the body properly aligns the two parts. Tighten the cord clamp assembly screws to 
a maximum 10-12 in-lbs torque. Lastly �ghten the assembly screws.
www.ACWORKS.com
Assembly Screw
Cord Clamp Screw
Terminal Screw
20 AMPERE LOCKING RECEPTACLE
L5-20 L6-20 L14-20
L15-20 L16-20 L21-20
L5-30 L6-30 L14-30
L15-30 L16-30 L21-30
30 AMPERE LOCKING RECEPTACLE
NOT AN 
AVAILABLE
AC WORKS™
PRODUCT
NOT AN 
AVAILABLE
AC WORKS™
PRODUCT

