Power Plug Adapter Question

YOu should be able to get the needed adapter at any decent size RV store or Camping world or Generator store.. I would not be surprised to find 'em at Wal*mart et-al.

PROPER wireing is like to like that is the bright screws get the white wire dark black and green the green, DO NOT join anything together except at the 50 anp end you can "Bridge" the two legs

NOTE: If you go to the RV/Generator/Wal*mart you need TWO adapters

One is the RV/Generator 30/30 (TT-30 outlet twist lock plug)
the other is the 50-30 RV adapter (50 outlet 30 plug)

Note 2: IN some cases (if you have, for example, and HW-50c) you will get "open ground" errors when using a PROPERLY wired adapter.. That is the ONLY time you join neutral and ground. DO NOT otherwise

DrewE wrote:

10forty2 wrote:

I have the standard RV 4-blade 50amp plug on my rig that normally supplies power when plugged in. On that plug, I understand that there are 2 120VAC hot leads, one ground and one neutral. The generator is a Honda 3000iU that has a 30amp/120VAC female twist lock outlet. I need to adapt the 50amp 4-blade RV plug down to the 30amp 120VAC twist lock that has 3 blades.

So, again, do I tie the neutral and ground together from the 50amp plug to the single ground blade on the 30amp twist lock, and run the separate hot leads (one each) to each of the other blades on the 30amp twist lock plug?

No. The 30A twistlock has a neutral, a ground, and a single hot. The neutral from the 50A socket goes to the neutral on the 30A plug. The ground from the 50A socket goes to the ground on the 30A plug. The two hots from the 50A socket are tied together and go to the single hot on the 30A plug.

Alternately, you could connect a 30A RV receptacle to a 30A twistlock plug (with like contacts wired together, of course) and use your 30A to 50A adapter along with it. The net effect would be the same.

If you have an EMS, you may need to bond the neutral and ground at the generator to make the EMS happy.

Thanks!!!

10forty2 wrote:

I have the standard RV 4-blade 50amp plug on my rig that normally supplies power when plugged in. On that plug, I understand that there are 2 120VAC hot leads, one ground and one neutral. The generator is a Honda 3000iU that has a 30amp/120VAC female twist lock outlet. I need to adapt the 50amp 4-blade RV plug down to the 30amp 120VAC twist lock that has 3 blades.

So, again, do I tie the neutral and ground together from the 50amp plug to the single ground blade on the 30amp twist lock, and run the separate hot leads (one each) to each of the other blades on the 30amp twist lock plug?

No. The 30A twistlock has a neutral, a ground, and a single hot. The neutral from the 50A socket goes to the neutral on the 30A plug. The ground from the 50A socket goes to the ground on the 30A plug. The two hots from the 50A socket are tied together and go to the single hot on the 30A plug.

Alternately, you could connect a 30A RV receptacle to a 30A twistlock plug (with like contacts wired together, of course) and use your 30A to 50A adapter along with it. The net effect would be the same.

If you have an EMS, you may need to bond the neutral and ground at the generator to make the EMS happy.

I am 95% certain that the RV 50A plug is an NEMA 14-50



and the Honda receptacle is a L6-30



Buy a standard RV 50A female to 30A male adapter, cut the TT-30 plug off and install a L6-30 plug.

Do you have Amazon Prime? It's in stock. Search for Camco 55412.

I have an on-board genset, but don't like to run it overnight due to CO concerns. I have a Genturi, but still don't like having an internal combustion engine running underneath where I will be sleeping....just doesn't compute in my head as being safe, no matter what device is connected to it.

I have the standard RV 4-blade 50amp plug on my rig that normally supplies power when plugged in. On that plug, I understand that there are 2 120VAC hot leads, one ground and one neutral. The generator is a Honda 3000iU that has a 30amp/120VAC female twist lock outlet. I need to adapt the 50amp 4-blade RV plug down to the 30amp 120VAC twist lock that has 3 blades.

So, again, do I tie the neutral and ground together from the 50amp plug to the single ground blade on the 30amp twist lock, and run the separate hot leads (one each) to each of the other blades on the 30amp twist lock plug?

In other words, I need to make this:

https://www.etrailer.com/RV-Wiring/Camco/CAM55412.html

10forty2 wrote:
I find myself in a bit of a bind for a brief upcoming weekend trip, without the proper adapter for a generator. My power cord is the standard 4-blade RV 50amp plug. I have the 50amp RV female to 30amp three blade adapter, but I need to plug into a Honda generator which only has the 3-blade twist lock. I can get the plugs and wire through a local supply house, but the direct, pre-made adapter is not locally available. Soooo.......

When making the adapter, do I tie the neutral and ground together and run the two separate hots to the other two blades? Sounds right in my head, but I guess I need supporting feedback....

Thanks!!

Is your generator 220V or 110? Look at http://www.nooutage.com/adapt.htm and see if you can identify your plug from the drawing.

I'm confused. you have a gen set outlet 30 amp, 1 hot, 1 neu, 1grd?? you are going to wire an outlet that fits that to a 30 amp RV plug, with 1 hot, 1 n3u,1 grnd??
the 30 to 50 amp adapter is the one that is already tied together to power both sides in rv.


bumpy