Reddit reviews Conntek 14330 1.5-Foot Adapter 30 Amp NEMA 14-30P 4 Prong Male Plug To 30 Amp 125/250 L14-30R Volt Locking Female Connector
We found 2 Reddit comments about Conntek 14330 1.5-Foot Adapter 30 Amp NEMA 14-30P 4 Prong Male Plug To 30 Amp 125/250 L14-30R Volt Locking Female Connector. Here are the top ones, ranked by their Reddit score.
RV Adapter30 amp 125/250 volt Straight Blade plug30 amp 125/250 volt Twist Lock FemalePigtail AdapterRV Camp Power
The conversion cables are rated for 30 amps.
https://www.amazon.com/gp/product/B001TO7130/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00DVE93PU/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
Technically using this and this would work, but you should just have an electrician change the dryer breaker to a two-pole 15 amp and change the outlet to a 6-15.