Needing help with electrical plug

[LinkedXJ]

I just bought a new trailer..

Its not a camper/TT.. its a car hauler, however... it is wired for 50a service.


My garage is wired for 50a service but with a different plug.

Trailer has a 4 prong plug, looks like this -
https://www.gexpro.com/shopimages/gexpro/P/S/3/PS_3867_IMAGE_ZM.jpg

The outlet in my garage looks like this-
http://ecx.images-amazon.com/images/I/41xgA8DDz2L._SX300_.jpg


Any one of you helpful folks know of the right cord i need to
plug my 4 pronger into to turn it into a 3 pronger?

I have found one... But its over $80. (what the..)

http://www.amazon.com/Conntek-50-Amp-Electric-Vehicle-Adapter/dp/B00STD8SEU


Any and all help is greatly appreciated.


I have bought a 50a to 15a converter to allow me to simply plug in
a everyday extension cord, i have basically the same thing
for our TT.. I would like to take advantage of my garage being wired
with 50a service though.



Thanks
-Sean

[KD4UPL]

You really don't want to use that 3 prong outlet for your RV. It is a 240v 50A outlet with no neutral. The 3 wires are 2 hots and a ground. For an RV you need a 4 wire connection with a separate neutral and ground.
There shouldn't be a ready made adapter.
It is possible to use the ground for the neutral and make it work but it's not advisable at all. It could pose a rather large safety hazard.

By the way, 50 amp RV outlets are not 50A 120v; they are 50A 240/120v split phase.

[Lynnmor]

Don't forget to pick up some marshmallows to roast over your 240 volt fire.

[wrvond]

That outlet looks like an air conditioner outlet.
Go to Lowe's or Home Depot and get an RV50 outlet to replace the one in your garage.
Verify it is actually 50 amp and 120 volts.