30A Y Connecters

CDNSENIOR wrote:
What we were hoping to accomplish is to have both 30A & 15/20A(110) at our hookup at our campground & not have to run a separate 110 feed.We have tried to plug into the rv system but blow the circuit breakers every time.This set up was to be a separate line for an infra red heater.

If the load is too much for the 30A breaker in your RV, it will probably also be too much for the 30A breaker in the box.

If it is a branch circuit blowing, it might be better going all the way to the 20A in the box, because if it is a 50/30/20 RV box they usually take the 20 from the opposite leg of the 50 than that tapped for the 30.

DSDP Don wrote:
There is another solution. On my previous coach with 50 amp, we often camped at 30 amp campgrounds and wanted to run our electric heater off of the additional 15/20 circuit in the shore power box, but didn't want to run an extension cord through a window.

I added a small outlet box in the power bay and ran Romex through flexible plastic conduit to a new outlet I added in the main room in an easily accessible area. I also split that off to a second outlet in the bathroom. I made a 15' power cord that plugged into the box in my power bay and into the shore power 15/20 amp circuit. This gave me a completely separate circuit from the 30 amp shore power to run my electric heater or the wife could run her blow dryer in the bathroom.

I will be adding the same thing to my new coach.

My approach was to add a second circuit with 2 inside female plugs. The other end is a male plug that plugs into the dedicated 20A engine block heater female plug. So the new circuit always has power and a full 20A when on 50A shore power. If I want additional power for a 30A pedestal then I connect this new circuit with a standard 20A extension cord for 30A+20A of power. I do keep one of the ceramic heaters on low.

CDNSENIOR wrote:
What we were hoping to accomplish is to have both 30A & 15/20A(110) at our hookup at our campground & not have to run a separate 110 feed.We have tried to plug into the rv system but blow the circuit breakers every time.This set up was to be a separate line for an infra red heater.

Apparently it's a rig CB that is tripping. It could be a weak CB or to much load on that circuit. Try another circuit or add a new CB with new circuit.

I don't follow how the adapter that you want which would plug into the pedestal would prevent you from running a second cord to the adapter.

CDNSENIOR wrote:
What we were hoping to accomplish is to have both 30A & 15/20A(110) at our hookup at our campground & not have to run a separate 110 feed.We have tried to plug into the rv system but blow the circuit breakers every time.This set up was to be a separate line for an infra red heater.

Ah, your plan as described will not work for that.. You need one of the following (well one of 2)

What I do is this... I have a "break out" box on the side of my motor home,, this can be an existing basement compartment and would be if I'd have known how to do it (I do now) but I'm glad I did it the way I did.

I unhooked the feed to the rear A/C from the breaker box ran it out to the box where there is a socket, ran a 12ga cord back to a Junction Box I installed, and there "Split" into two lines, all 12ga, one is the original line to the A/C. the second runs to a very different outlet.. (It will not accept a standard plug) I also have a matching adapter for the heater that plugs into it.. I never use both A/C and Heat at the same time.

You will need a way to feed power to the Infra Red heater independent of the RV's power system. One option (And I have used this) is to run ac cord out under a slide out.

Now.. on the park end,, If you use the 30 to 30/15 you will simply pop the park's breaker instead of yours.

Either use a 50 to 30/15, or plug into the park's 15/20 amp outlet independent of the 30


Trying to combine the two so you only have one cord to the RV.. WILL NOT WORK. And in fact may be dangerous, depending on the pedestal.

Thank you for all your input it has been very helpful.

CDNSENIOR....You'll never see a commercial version of what you're looking for because it would be dangerous. The standard three prong 110 volt outlet could be 20amp or 15 amp and you would have to know that for sure before you accidently plugged into tow 20 amp units putting 40 amps into your coach.

There is another solution. On my previous coach with 50 amp, we often camped at 30 amp campgrounds and wanted to run our electric heater off of the additional 15/20 circuit in the shore power box, but didn't want to run an extension cord through a window.

I added a small outlet box in the power bay and ran Romex through flexible plastic conduit to a new outlet I added in the main room in an easily accessible area. I also split that off to a second outlet in the bathroom. I made a 15' power cord that plugged into the box in my power bay and into the shore power 15/20 amp circuit. This gave me a completely separate circuit from the 30 amp shore power to run my electric heater or the wife could run her blow dryer in the bathroom.

I will be adding the same thing to my new coach.

Heater? I think you will just start tripping the 30a breaker.

Otherwise a dedicated circuit in the RV will be best for using a space heater. Such as using the microwave outlet. Or tap into the air conditioner romex to add an outlet as you would not be using the air and heat at the same time.

What we were hoping to accomplish is to have both 30A & 15/20A(110) at our hookup at our campground & not have to run a separate 110 feed.We have tried to plug into the rv system but blow the circuit breakers every time.This set up was to be a separate line for an infra red heater.

You hit on how I'd do it, (plug 15 amp plug into RV)

I do know why someone might want one,, You plug a volt meter into the 15 amp outlet.. But other than home made I have not seen one.

So, how do you home brew one?
(and the one just above me is exactly what he was looking for)

Pigtail box and outlets of course.

This is as close as I can find:



http://www.conntek.com/products.asp?id=744

Otherwise you could plug in your RV direct and use the outside outlet to plug in the second item.