3 Prong To 4 Prong Generator Plug Adapter Connects, 30 Amp Twist Lock Product Features [Adapts Generator to Transfer Switch L14-30 Inlet Box]: NEMA L5-30 outlet usually is found installed in generators, campgrounds, and marina docks. The most popular use for this adaptor cord is with transfer switches. You can connect your generator to a transfer switch for emergency power using this cord: NEMA L5-30P locking plug end connects to 3 prong generator outlet, NEMA L14-30R receptacle end connects to 4 prong power transfer switch inlet. [UL Compliant STW 10/3 AWG Configuration]: Made with STW 10/3 AWG high quality oxidation resistant oil free heat proof 10 gauge copper inner wire with 600-Volt durable PVC jacket insulation, 120/250V, supports max. 30Amp and 7500 Watts overload. [Heavy Duty Quality Copper Wire Construction]: This generator to transfer switch plug adapter is heavy shielded, sturdy, thick and makes your normal power cord a bit longer and makes it easy to connect your 3 prong generator to L14-30 transfer switch inlet box. [Quicker, Easier and Cheaper Solution than Hiring Electrician]: Calling an electrician to change the generator plug or rewire wall socket is a costly affair besides destroying the drywall and other modifications may be required. This 3 to 4 prong generator plug adapter offers a quicker, easier and cheaper solution. It?s super easy to install, no tools or electrical wiring knowledge is required, just plug in and the power is on. [1-Year Warranty 30-Day Full Refund Policy]: This dryer adapter 3 prong to 4 prong comes with a 1-year warranty, contact for any questions you might have, also you may return it without any questions asked within 30-days of the purchase date for a full refund of the purchase price. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!