Overview

The AOWEITOUR 30 Amp NEMA 10-30P Dryer Plug to 20 Amp NEMA 6-20R EV Power Adapter Cord is a purpose-built conversion cable designed for EV owners who want to leverage their existing 30-amp dryer outlet for Level 2 charging. At just 1 foot in length, this short adapter keeps your setup tidy without excess cable clutter. Constructed with heavy-duty 10-AWG STW wire, it safely handles up to 30 amps on the input side and delivers up to 20 amps at the NEMA 6-20R output. Rated for 250 volts, it converts the older 3-prong dryer receptacle (NEMA 10-30) into a modern 2-pole-plus-ground outlet (NEMA 6-20) compatible with many portable EV chargers. What makes this adapter stand out is its ability to turn an underutilized dryer outlet into a dedicated EV charging station without any electrical work. For EV owners stuck with slow 120V Level 1 charging, this adapter provides a straightforward path to 240V/20A charging—roughly doubling the charging speed. It's a practical, cost-effective solution for renters, homeowners, and RV travelers who already have access to a NEMA 10-30 receptacle.

Connectivity & Compatibility

Input: NEMA 10-30P (30A/250V, 3-pole, ungrounded) – commonly found on older electric dryers in North America. Output: NEMA 6-20R (20A/250V, 2-pole + ground) – accepts NEMA 6-20P plugs used by many Level 2 EV chargers. Cable: 10-AWG STW (Service Thermoplastic Weather-resistant) – rated for high temperature and outdoor exposure. Length: 1 foot (approx. 30 cm) – minimizes cable slack when the charger is close to the outlet. Important: This adapter does NOT provide a ground connection because the NEMA 10-30 receptacle lacks a ground pin. Ensure your EV charger has GFCI protection or use a grounded adapter if safety is a concern. Japan users: NEMA 10-30 outlets are not standard in Japan. You will need a separate conversion plug to adapt to Japanese 200V outlets (e.g., NEMA 6-20 or NEMA 14-30 equivalent).

Product Info

AOWEITOUR is a brand specializing in EV charging accessories and power adapters, primarily sold through US and Japan. This adapter has been available since around 2022 and is priced in the ¥5,500–¥6,000 range on Japan, making it an affordable entry-level solution for DIY EV charging. The package includes only the adapter cable itself—no tools or additional parts required. Warranty is covered by the manufacturer's standard policy, and 's return policy applies for purchases made through their platform. In the market, this product occupies a niche position as a practical, no-electrician-needed accessory for EV owners who want to maximize their existing home infrastructure.

Best Use Cases

Homeowners with a dryer outlet in the garage: If you have a NEMA 10-30 outlet near where you park, this adapter lets you plug in a Level 2 EV charger instantly. You'll get 240V/20A charging—about 2x faster than a standard 120V outlet. Just make sure you have a compatible NEMA 6-20P charger. Not ideal if your dryer outlet is far from the parking spot or if you share the circuit with other high-power appliances. Renters who can't modify the electrical panel: No need to call an electrician or drill holes. Simply plug the adapter into the existing dryer outlet and connect your charger. When you move out, unplug it and everything is back to original. However, always check with your landlord first, and be aware that the circuit may be shared with the dryer—don't run both simultaneously. * RV and camping enthusiasts: Many RV parks and campgrounds offer NEMA 10-30 receptacles for RVs. This adapter allows you to charge your EV using that same outlet. Keep in mind that campground circuits may have limited capacity, so avoid running high-wattage appliances at the same time to prevent tripping breakers.

Things to Consider

This is a conversion cable only—you still need a separate Level 2 EV charger with a NEMA 6-20P plug. The adapter does not include any charging electronics. The NEMA 10-30 outlet is an older ungrounded design. Using this adapter means your EV charger will not have a ground connection, which could pose a shock hazard. Use a charger with built-in GFCI protection, or consider upgrading to a grounded NEMA 14-30 outlet if possible. In Japan, NEMA 10-30 outlets are rare. You'll need an additional conversion plug to match Japanese 200V outlets, and you must verify that your home's electrical capacity can handle the load. The adapter is rated for 30A input / 20A output. Never connect a charger that draws more than 20A continuously. Overloading could cause overheating or fire. * The 1-foot length is convenient for tight spaces, but if your charger's plug is far from the outlet, you may need a heavy-duty extension cord rated for at least 20A. Avoid using standard household extension cords. ## FAQ
Q: Can I use this adapter with a Tesla Mobile Connector? A: Tesla's Mobile Connector supports NEMA 5-15 and NEM

Product Disclosure (Amazon)

  • Manufacturer: AOWEITOUR
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0B565NBJS
  • Note: This article covers a manufacturer-made product based on Amazon listing details.