This wall plug is recommended for use with:
PowerFlow-100™ (NEMA 10-30P)
PowerFlow-200™ (NEMA 10-50P)
PowerFlow-300™ (NEMA 10-50P)
By simply changing the ground blade, the plug can be rated from 30A (for PowerFlow-100™) to 50A (for PowerFlow-200™ & PowerFlow-300™)