You can use a 30-amp twist lock plug for either a 240-volt supply or a 120-volt application. Installation normally takes about 30 minutes, and requires a minimal amount of tools and experience.
Things You Will Need
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Turn the screws in the plug contact end of the twist-lock assembly counterclockwise, until they are loose from the outside cover. The screws will free themselves from the cover, but will not come completely out of the assembly.
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Remove the outside cover and set it aside.
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Use the wire strippers to strip the sheathing from each of the conductors to the point recommended by the twist-lock plug manufacturer. All the conductors should be of equal length. Their colors will be green, black and white.
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Place the twist-lock outer cover over the cable, with the open plug-end facing the tips of the conductors.
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Insert the conductors through the rear of the twist-lock assembly.
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Insert the green conductor into the green receptacle behind its plug tip. Make sure the tip is fully seated up to the shoulder of the sheathing.
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Insert the white conductor into the white receptacle behind its plug tip. Make sure the tip is fully seated up to the shoulder of the sheathing.
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Insert the black conductor into the black receptacle behind its plug tip. Make sure the tip is fully seated up to the shoulder of the sheathing.
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Slide the twist-lock outer cover forward over the assembly.
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Tighten the cover screws using the appropriate screwdriver, taking care not to tighten them too much. Be certain that each screw is fully seated.
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Tighten the cable clamp at the rear of the twist-lock plug, using the screwdriver to secure the cable inside it. Make sure it has a firm hold of the cable's outer jacket.
The Drip Cap
- The advent of the twist-lock plug revolutionized the safety and reliability of high-amperage extension cable connections in commercial and industrial applications.
- Twist-lock connector plugs are also used on lower capacity extension cords, and as power supply connector plug-ins on various types of electrical equipment.
- Turn the screws in the plug contact end of the twist-lock assembly counterclockwise, until they are loose from the outside cover.
- Make sure the tip is fully seated up to the shoulder of the sheathing.
- Insert the white conductor into the white receptacle behind its plug tip.
