cable wired like this: 30 amp male to two 30 amp female Does such a beast exist, how would you search for it?I find plenty of 50 amp male to two 30 amp female cables.Was recently at an older CG that didn't have spots very well defined, so there were 2 trailers trying to share a power box with only a single 30 amp outlet (and the 15 amp was there but...) rather than flip a coin or come to blows over who's 30 amp outlet it was (not marked btw), I was thinking a y-cable would be a good compromise. sure neither rig could draw the cull 30 amps all the time, but the surge current would be there that the 15 amp just can't supply.

No, you are not going to find anything like that. You certainly could make one but there's no reason anyone would mass produce such a device. I am not even sure what kind of side effects such a device might have on one RV or the other.

you could make one but 30 amps is 30 amps so the breaker will flip at the pedastal

strange what they decide to mass produce ... I picked up an interesting adapter from Camco a few days back... it lets me plug a 15 amp cordset into a 30 amp outlet... that's 30 amp male and 15 amp female. So some Joe could plug a 100 ft L-cheapo 16 gauge extension cord into a 30 amp outlet, and make it glow at night without tripping the 30 amp breaker.

What makes you think that there is a 15 amp breaker on the 15 amp receptacle? You would be better off using a 15 amp receptacle than sharing a 30 amp, with someone trying to use a air conditioner on it. When both A/C's are running on 30 amps, you would trip it with just the additional load of the battery chargers.Working with a full 20 amps is better. Hopefully it is not to hot, as your A/C will draw more amperage while it is warmer. Many times the campground owner feeds a site with a 30 amp circuit breaker, and then might have a 30 and 20 amp circuit breaker in the power post at your site. So you might not be able to use the 20 amp and 30 amp without tripping the main feeding the campsite, depending on how it was wired of course. I was at one campground with a split wired 20 amp receptacle at each site. SO basically I had to use a 30 to 15 amp adapter, then the neighbor also used a 30 to 15 amp adapter, even though both sides of the normal household plug in where wired to two separate circuit breakers. (yes this happens - even in your own home where they wire the washing machine and dryer in your own laundry room). It worked, but I Was not happy, and did not need to run the A/C that night. Good thing I guess.Good luck with your problem!Fred.

Golden_HVAC wrote:Many times the campground owner feeds a site with a 30 amp circuit breaker, and then might have a 30 and 20 amp circuit breaker in the power post at your site. So you might not be able to use the 20 amp and 30 amp without tripping the main feeding the campsite, depending on how it was wired of course. I was at one campground with a split wired 20 amp receptacle at each site. SO basically I had to use a 30 to 15 amp adapter, then the neighbor also used a 30 to 15 amp adapter, even though both sides of the normal household plug in where wired to two separate circuit breakers. (yes this happens - even in your own home where they wire the washing machine and dryer in your own laundry room). It worked, but I Was not happy, and did not need to run the A/C that night. Good thing I guess.Good luck with your problem!Fred.30 amp female to 15 amp male I can understand... I use one all the time with my generator. but flip that around, just seems dangerous. I guess the adapter assumes the other end of the cordset will have a 15 amp breaker.

30 amp to 30 amp Y cable? | Good Sam Community

20 Replies

2oldman
Explorer II
Aug 02, 2014
wa8yxm wrote:
The unit you show feeds 30 amp to one leg and 20 to the other, it does not combine them.
Ok. Then the OP (if he ever reads this) can skip the 20a part.
wa8yxm
Explorer III
Aug 02, 2014
2oldman wrote:
GordonThree wrote:
I find plenty of 50 amp male to two 30 amp female cables...share a power box with only a single 30 amp outlet (and the 15 amp was there but...)
Use this, plus the adapter you just described.

If it works as described, would bump up the amps a bit.

First: Odds are it will not work as described, What it will do is trip the 20 amp GFCI outlet's GFCI..

Second if he plugged one trailer into the 20 amp outlet using a 30-20 adapter (NOT THIS THING) that should work the same

The unit you show feeds 30 amp to one leg and 20 to the other, it does not combine them. Here is why

Imagine a box wired like this

L-1---TT-30--Neutral---20 amp--L2

If you combined them that would = a 240 volt Dead Short.
2oldman
Explorer II
Aug 02, 2014
Bill.Satellite wrote:
..This is the exact type setup that will NOT work on any circuit which contains a GFCI.
Ok, so don't rely on that with a GFCI. Looks like OP is gone anyway.
Bill_Satellite
Explorer II
Aug 02, 2014
2oldman wrote:
GordonThree wrote:
I find plenty of 50 amp male to two 30 amp female cables...share a power box with only a single 30 amp outlet (and the 15 amp was there but...)
Use this, plus the adapter you just described.

If it works as described, would bump up the amps a bit.

This is the exact type setup that will NOT work on any circuit which contains a GFCI. There are several versions but none will work properly.
2oldman
Explorer II
Aug 02, 2014
You're welcome OP.
mkirsch
Nomad II
Aug 01, 2014
MEXICOWANDERER wrote:
What kind of nuthouses are some of you staying in?

When I built the (small) park in Las Peñas, I ran three six gauge wires to each pedestal, each featuring 50-amp ganged 240 breakers, and a duplex fed with a 20 amp site breaker and 10-gauge.

It's not reassuring reading to realize that many of you are staying in places seemingly built by Snuffy Smith. I can forgive Mexicans wiring things like they were strings of outdoor Christmas lights but you folks are Americans.

A friend of mine worked as caretaker for a campsite for a season. One of his projects was to wire up a new row of pedestals.

The boss gave him 14ga ROMEX to wire up 50A pedestals. When he questioned the boss, the boss was adamant that he use the 14ga ROMEX and to stop questioning him, lest he lose his job. Frankly I'm surprised he didn't quit, as he didn't need the money and he doesn't put up with *B*S* from anyone.

American campground owners are a special breed. They make a certain race of people stereotyped as being cheap look as generous as Andrew Carnegie.
2oldman
Explorer II
Aug 01, 2014
GordonThree wrote:
I find plenty of 50 amp male to two 30 amp female cables...share a power box with only a single 30 amp outlet (and the 15 amp was there but...)
Use this, plus the adapter you just described.

If it works as described, would bump up the amps a bit.
wa8yxm
Explorer III
Aug 01, 2014
A cord with one 30 amp male and two 30 females.. I am not sure.. i know how to build one easy enough, but I do not think I have seen one

What I have seen, and this should work for you

A "Y" cord with a 50 amp plug and two TT-30 amp outlets

Then you need a 50-30 amp Adapter to get back to a 30 amp plug

NOTE: you only get 30 amps to share between the two RV's.
spud1957
Explorer
Aug 01, 2014
I know this is a little off topic but for those that only have access to a 50amp plug and have a 30amp cord, you have to use one of the 50amp male/30amp female adapters. Since you are plugging into a 50amp receptacle, it is safe to assume there would be a 50 AMP, 240VAC breaker.

This is what is on the 50/30amp adapter packaging:

"....Cord must be used in conjunction with a circuit breaker rated 30 AMP, 125 VAC."

This warning covers their a** in the event of any issues.
AllegroD
Nomad
Aug 01, 2014
GordonThree wrote:
cable wired like this: 30 amp male to two 30 amp female

Does such a beast exist, how would you search for it?

I find plenty of 50 amp male to two 30 amp female cables.

Was recently at an older CG that didn't have spots very well defined, so there were 2 trailers trying to share a power box with only a single 30 amp outlet (and the 15 amp was there but...) rather than flip a coin or come to blows over who's 30 amp outlet it was (not marked btw), I was thinking a y-cable would be a good compromise. sure neither rig could draw the cull 30 amps all the time, but the surge current would be there that the 15 amp just can't supply.

Back to the OP. I highlighted the part of the OP that I targeted with my earlier response. If the OP is intending to get two 30 amp RV on a single 30 amp CB, there are probably going to be issues. Who gets to decide who exceeds 15 amps each. You will not get 60 amps.