TT-30P to L14-30R 30A Generator Adapter Cord 12in 7500W STW 10AWG Yellow ETL

Product Info

🔌 TT-30P → L14-30R 30A Generator Adapter Cord 12" (Yellow)

Fast, visible, and heavy-duty — this compact adapter converts a TT-30P 3-prong generator/RV plug into a locking L14-30R 4-prong twist-lock receptacle so you can feed an L14 inlet or transfer switch from a TT-30 output. Handy when your generator has a TT outlet but your gear or inlet expects a locking L14 connection.


🔎 What it is

  • 3-prong TT-30P male → 4-prong L14-30R female adapter cord

  • Purpose: let a TT-30 generator/RV outlet feed equipment or an L14 inlet temporarily

  • Bright yellow cord for high visibility on job sites or campsites


📦 Package Contents

  • 1 × TT-30P male to L14-30R female adapter cord (preassembled)


📐 Specifications

  • Rated: 30 A

  • Voltage: 250 V (L14 is a 125/250V 4-wire configuration)

  • Power: Up to 7,500 W (max)

  • Cable: 10 AWG / 3C STW (heavy duty)

  • Length: ~12 inches / 1 ft overall cord

  • Color: Yellow for visibility

  • Safety: ETL listed. ETL


🧱 Build & Materials

  • Molded TT-30P plug with grip handle for easy plug/unplug

  • L14-30R locking female with strain relief to reduce stress on conductors

  • Solid copper conductors inside STW jacket for durability and outdoor use


🔧 Installation & Use Notes

  • Turn off generator before connecting.

  • Plug TT-30P into the generator’s TT-30R outlet, then connect the L14-30 plug/inlet to the adapter.

  • Use for temporary power transfers, jobsite hookups, or when your generator lacks an L14 outlet.

  • Designed for inline/adaptor use only — not a substitution for permanent rewiring.


✔️ Fits / Compatibility

  • Fits: Generators or outlets with a TT-30 female and equipment or inlet that accept L14-30 male.

  • Does NOT convert neutral/ground wiring or alter voltages — verify your generator wiring and transfer switch configuration before use.

  • Helpful for small transfer tasks but not a replacement for a proper transfer switch installation.

Note: When connecting generators to household transfer switches or inlets, confirm generator bonding and neutral/ground configuration with the transfer switch manufacturer or a licensed electrician.


⚠️ Safety & Important Warnings

  • This adapter does not reconfigure circuits, change voltage, or alter breaker capacities. It merely adapts connectors.

  • Verify generator output, inlet wiring, and neutral/ground setup before use to avoid backfeed or unsafe conditions.

  • For house transfer switch or permanent installations consult a qualified electrician.

  • Inspect connectors and cord before each use; do not use if damaged.


Why buy this

Small, visible, and built stout — perfect as a reliable short adapter when you need to connect a TT-30 generator outlet to an L14 inlet quickly and safely.

🔋 Ready to hook up and go? Add this ETL listed adapter to your cart and keep your power options flexible.


Item model number Tt-30p to L14-30r
Style Tt-30p to L14-30r
Item Weight 14.4 ounces
Gauge 1E+1
Plug Format NEMA TT-30P, L14-30R
Item Length 12 Inches
Connector Gender Male-to-Female
Package Dimensions 6.3 x 5.98 x 2.17 inches
Size 1 ft

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Warranty & Returns

We offer a 30-Day Return Policy on items that you are not completely satisfied with. You have the option for a refund or an exchange of the item. 

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