Originally Posted by herk7769
Dryer Plugs have 2 slanted "line" blades and a BLADE ground and are wired for 220VAC.
RV plugs have 2 slanted "line" blades and a ROUND ground and are wired for 110 VAC.
Yes on old 30 amp dryer plugs, that is the confusion on a 30 amp hookup. This is where electricians fail and wire up the wrong thing. All they need to do is read the front of the plug. All plugs should have stamped 120Vac for (RV TT-30) RV plug, or 120/240Vac for (nema 10-30) old dryer plug.
However, New code uses the 50 amp nema 14-50R or 30 amp nema 14-30R depending on what you put in. On ranges they use the 14-50. These nema 14-50's is what 50 amp rv's use.