30/30 pigtail

rgatijnet1 wrote:
Depends on how things are wired as to what you get at your MH. If there are only 2-30 amp plugs on the pedestal, I would suspect that it is wired for 120 volts and NOT the 240 volts that a normal 50 amp outlet would have. With 50 amps pedestal plug you have 2-50 amp legs that are out of phase with each other and you will have a total of 100 amps available at your main electrical panel.
If the 2-30 amp plugs are in phase and are both tied to one 120 amp supply line, the most you will have available to your main electrical panel is 60 amps or 30 amps on each hot leg of the 50 amp plug.
Now if the pedestal is wired with a 240 volt feed, and both hot lines are split and connected to 2-30 amp pedestal plugs, then you would still only have 60 amps total available at your MH since each leg is limited by the 30 amp circuit breaker.

Technically, the two legs are not out of phase with each other and are considered a single phase. They are split phase and utilize a center tap of the transformer to get the 240V. They are essentially a continuation of the same phase to each other.
Split phase power

Sorry for the Cliff Clavin moment. :B

Depends on how things are wired as to what you get at your MH. If there are only 2-30 amp plugs on the pedestal, I would suspect that it is wired for 120 volts and NOT the 240 volts that a normal 50 amp outlet would have. With 50 amps pedestal plug you have 2-50 amp legs that are out of phase with each other and you will have a total of 100 amps available at your main electrical panel.
If the 2-30 amp plugs are in phase and are both tied to one 120 amp supply line, the most you will have available to your main electrical panel is 60 amps or 30 amps on each hot leg of the 50 amp plug.
Now if the pedestal is wired with a 240 volt feed, and both hot lines are split and connected to 2-30 amp pedestal plugs, then you would still only have 60 amps total available at your MH since each leg is limited by the 30 amp circuit breaker.

camp104 wrote:
my MH is wired for 50 amp The lodge that I'm staying @ has 2 30 amp outlets and if none parks next to me I can use both plugs.

Keep in mind your 50A is 50A X 2 120V "sides" (really split phases). So a 50A is in reality 100A.
Two 30A plugs do not do the same thing. You would at best have 50~55 amps of capacity (the 30A is derated) which is still much lower than the 100A your 50A rig is capable of.

If you have a splitter with a 50A male plug and two 30A female sockets, you can use it to plug two 30A RVs into a single 50A outlet, and both will have ample power available (assuming decent campground infrastructure).

If you have a combiner with a single 50A female socket and two 30A male plugs, in theory you can plug it into two 30A sockets and get more power than with a single 30A to 50A adapter. I personally would throw the Y cable out, however, as there are a number of potential problems inherent in the setup. It will not work if either of the sockets you're plugging into has a ground fault interrupter as it by design creates a ground fault. If one of the sockets has a poor or broken neutral connection and both are on the same phase you could have a substantially overloaded neutral connection on the other one. If one of the sockets is badly miswired with swapped neutral and hot leads, plugging it in will create a short circuit that (one hopes) trips the breaker on the power pedestal. There likely are other fault modes that could be dangerous.

2 30A plugs wired correctly to a 50A receptacle will allow you to run as if connected to a 50A receptacle provided the 2 30A plugs are inserted into 2 separate 30A receptacles. There is one potential issue. Any 240V appliances you have may or may not work depending on how the 2 30A receptacles are connected to the campground mains.
EDIT:
Each 30A receptacle must have its own circuit breaker.

my MH is wired for 50 amp The lodge that I'm staying @ has 2 30 amp outlets and if none parks next to me I can use both plugs.

camp104 wrote:
I have a spliter that has 2 30 amp plugs that are wired to a 50 amp plug so I can plug into my motor home I was told that if I plug into 2 30 amp plug that I would get 50 amp to the RV? Has anyone ever done this? TOM

if your MH is internally wired for 30-amps then thats all you're gonna pull. but external appliances not regulated by the MH can be used off the post. but i gave never seen a post with 2-30 Mp. onnectiobs for the same site.