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Black cylindrical twist-lock plug with three angled metal prongs and visible terminal screws

Superior Electric

Superior Electric YGA028 Locking Plug L14-20P 20 A 125/250V 3 Pole

SKU CH-T93J-9EKPE

A 20 A, 125/250 V twist-lock plug with galvanised steel terminals for secure industrial wiring

  • TypeWiring Devices
  • Reliable twist-lock connection prevents accidental disconnection in industrial use
  • 20 A 125/250 V rating powers demanding tools and equipment
  • Galvanised steel screw terminals enable quick, secure wiring
  • Black wire clamps simplify installation on power cords
  • Replaces worn plugs to restore extension cords and tools

Industrial Locking Plug L14-20P

The Superior Electric YGA028 is a NEMA L14-20P twist-lock plug rated for 20 A at 125/250 V AC. It is built for electricians and maintenance crews who need to replace worn connectors on power tools or extension cords in commercial and industrial settings. The three-pole, four-wire configuration suits single-phase equipment requiring both voltages.

Thermals Noise and Power Draw

The plug handles continuous current up to its 20 A rating without overheating when wired correctly to the proper conductor size. Galvanized steel internal posts with screws provide a low-resistance path that minimises voltage drop under normal load. No moving parts or active cooling mean silent operation and zero standby power consumption.

Sustained Load Behaviour

Under sustained load the twist-lock mechanism resists accidental disconnection caused by vibration or cable tension on job sites. The black wire terminal clamps maintain clamping force over repeated thermal cycles, keeping connections secure during long shifts. Proper torque on the terminal screws ensures reliable performance for the duration of the cord assembly service life.

Highlights

  • Reliable twist-lock connection prevents accidental disconnection in industrial use
  • 20 A 125/250 V rating powers demanding tools and equipment
  • Galvanised steel screw terminals enable quick, secure wiring
  • Black wire clamps simplify installation on power cords
  • Replaces worn plugs to restore extension cords and tools

Specifications

BrandSUPERIOR ELECTRIC
TypeWiring Devices

Questions about this item

How do I wire the YGA028 plug and which step is often done wrong?

Loosen the galvanised steel screws, insert each conductor into its black terminal clamp, then tighten firmly; the step most often missed is fully securing every screw so no strand can pull loose.

What part of the YGA028 will need replacement after long service?

The galvanised steel terminal screws and black clamps can fatigue from repeated tightening; if they no longer grip the wire solidly, replace the entire plug.

At what load does the YGA028 hit its thermal limit first?

The plug is rated 20 A at 125/250 V AC; sustained current above 20 A will cause the terminals to overheat before any other component fails.

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