30 A plug to 50 A receptacle.

[rhagfo]

Originally Posted by roadglide

This is for home use. I have 30 A pedestal 30 amp cable the receptacle is bad . I ordered 5o A yellow receptacle I would like to wire my cable 30 amp cable. I think it’s straight forward. I could use some advice on wiring the 30 amp black ,white and green to this plug .

Ok, you have a 30 amp cable, and the plug end is good, am I correct so far?
If this is the case, then cut off the end that would connect to the trailer. You should have three wires black (hot), white (neutral), and green (ground). On your 50 amp plug (trailer end) connect connect white to the white terminal, green to the green terminal, and black to the black terminal, before tightening the black terminal add a 10 gauge short jumper between the black and red terminal. You have now created a long 30 amp to 50 amp dog bone, the existing 30 amp cable will be 10 gauge, and the cord will be correctly protected by the 30 amp breaker for your pedestal.
I glanced over the latest post and didn’t see this clearly covered. If it was I am sorry.

PS: This is also a safe cable to use in park that may only have a 30 amp pedestal.

[roadglide]

Originally Posted by notanlines

Jerry, I don't think this is what is being suggested. Go back and read the previous posts slowly and I think you'll see where the problem and solution lie.

I think I found the off topic thanks Jim . Nothing wrong with 50 to 15 amp dog bone for light duty us to keep the battery charged with the converter.

[roadglide]

This is what I’m going to make 30 to 50 amp rv cord .

[flybouy]

Originally Posted by roadglide

I hope the pictures explain. I don’t have a 50 to 30 amp dog bone never used one . I’m using 15 amp extension cord .

Post #8 quoted above is where the concern is.

[roadglide]

Originally Posted by roadglide

I agree but the 15 amp extension cord it’s plugged into 30 amp box with a dog bone to power my 4 amp battery mender. I have a 30 amp and 50 amp power cord. The 30 amp cord is trash receptacle end. I would like to put a 50 amp RV plug that will plug into my 50 amp camper . I would like to put a 50 amp RV plug that will plug into my 50 amp camper there is no way I’m not trying to run 50 A through a 30 amp cord .

Post 19 explains my 15 amp cable. The post should have been clear from when I started out. I believe nobody knew there was a 30 to 50 amp 25 foot Dog bone. I did know or I would not have been on the forms asking questions.

[JRTJH]

Originally Posted by roadglide

I agree but the 15 amp extension cord it’s plugged into 30 amp box with a dog bone to power my 4 amp battery mender. I have a 30 amp and 50 amp power cord. The 30 amp cord is trash receptacle end. I would like to put a 50 amp RV plug that will plug into my 50 amp camper . I would like to put a 50 amp RV plug that will plug into my 50 amp camper there is no way I’m not trying to run 50 A through a 30 amp cord .

Jerry,

The part I changed to red is the issue. You have a 15 amp extension cord plugged into a 30 amp box (protected by a 30 amp circuit breaker). If anything happens to damage the 15 amp cord or if the 4 amp battery mender shorts out, you'll burn up the 15 amp extension cord before the 30 amp circuit breakers opens to protect the melted and burning 15 amp cord.

As Marshall posted, what you've got is a 15 amp "fusible link" in a 30 amp circuit.... The "weakest link is the 15 amp extension cord"... What everyone is suggesting is that you use (or make) a 30 amp extension cord that won't melt before the 30 amp circuit breaker that's protecting your 30 amp box opens to protect the circuit from a problem with your 4 amp battery mender.....

What people are saying is that if you were using a 30 amp extension cord on that 30 amp box and circuit breaker, it would be safer.

[flybouy]

Originally Posted by roadglide

This is what I’m going to make 30 to 50 amp rv cord .

If that’s rated for 30 amps (10 ga wire) you should be good.

[roadglide]

Originally Posted by JRTJH

Jerry,

The part I changed to red is the issue. You have a 15 amp extension cord plugged into a 30 amp box (protected by a 30 amp circuit breaker). If anything happens to damage the 15 amp cord or if the 4 amp battery mender shorts out, you'll burn up the 15 amp extension cord before the 30 amp circuit breakers opens to protect the melted and burning 15 amp cord.

As Marshall posted, what you've got is a 15 amp "fusible link" in a 30 amp circuit.... The "weakest link is the 15 amp extension cord"... What everyone is suggesting is that you use (or make) a 30 amp extension cord that won't melt before the 30 amp circuit breaker that's protecting your 30 amp box opens to protect the circuit from a problem with your 4 amp battery mender.....

What people are saying is that if you were using a 30 amp extension cord on that 30 amp box and circuit breaker, it would be safer.

My tender has a 7 1/2 amp fuse in line. I agree leaving an extension cord plugged in to charge the batteries with the converter using a 30 amp service, That’s something to think about thanks.

[roadglide]

I seen this with my meter wiring a jumper from the black to the red I had 2 120 Hot legs. I removed the jumper and got 120 V on the white leg that’s what I used 1 hot leg .

[flybouy]

Originally Posted by roadglide

I seen this with my meter wiring a jumper from the black to the red I had 2 120 Hot legs. I removed the jumper and got 120 V on the white leg that’s what I used 1 hot leg .

The point is to jump the red and black at the 50 amp plug that attached to the trailer. That way, when using a 10 2 with ground you only have 1 “hot wire” that gets shared among the 2 bus bars in the camper.

No disrespect but this is very basic electrical understanding. Not everyone can understand it so I would strongly urge you to not attempt doing this on your own. Employ the help of someone with experience or purchase a a manufactured 30 amp extension cord and a manufactured 30 amp to 50 amp amp adapter.

[roadglide]

Originally Posted by flybouy

The point is to jump the red and black at the 50 amp plug that attached to the trailer. That way, when using a 10 2 with ground you only have 1 “hot wire” that gets shared among the 2 bus bars in the camper.

No disrespect but this is very basic electrical understanding. Not everyone can understand it so I would strongly urge you to not attempt doing this on your own. Employ the help of someone with experience or purchase a a manufactured 30 amp extension cord and a manufactured 30 amp to 50 amp amp adapter.

15 amp 3 wire cord has 1 hot leg now you have me thinking. I will test my 15 to 50 amp dog bone to see how many legs are hot . I’ll get back with The test results. That makes sense then. I tested the white side twice and will retest.

[roadglide]

Flyboy bad advice three wires coming in three wires going out . Thank about it there was feed back and if some how it gets away from me and somebody modifies it to fit a 220 Volt it will fry and meltdown everything and it’s path with the jumper .

[JRTJH]

Jerry,

You have 3 wires from the 30 amp plug and need to "jumper" the two hot leads on the 50 amp plug so both hot legs have power. You do that by adding a short wire between the black and the red pins inside the 50 amp plug. Here's a drawing of how it's done. Any other wiring, as far as I know, will either damage the plug, blow the 30 amp circuit breaker or short out the trailer power center.

If you're not sure EXACTLY what you're doing, get an electrician to verify that you do have the jumper on the correct connectors inside the 50 amp plug.

Here's the drawing:

[roadglide]

I had it wired that that way the first time there is to much controversy I’m reading about the wiring. I’m leaving it alone . Thanks

[rhagfo]

Originally Posted by roadglide

15 amp 3 wire cord has 1 hot leg now you have me thinking. I will test my 15 to 50 amp dog bone to see how many legs are hot . I’ll get back with The test results. That makes sense then. I tested the white side twice and will retest.

Roadglide, if you are still considering using a 14 gauge wire to make your cord I am done with this post, as you are looking to burn down your pole barn and 5er!

You stated before that you had a 30 amp cord and that the trailer end (female) end was bad. my response was:

Originally Posted by rhagfo

Ok, you have a 30 amp cable, and the plug end is good, am I correct so far?
If this is the case, then cut off the end that would connect to the trailer. You should have three wires black (hot), white (neutral), and green (ground). On your 50 amp plug (trailer end) connect connect white to the white terminal, green to the green terminal, and black to the black terminal, before tightening the black terminal add a 10 gauge short jumper between the black and red terminal. You have now created a long 30 amp to 50 amp dog bone, the existing 30 amp cable will be 10 gauge, and the cord will be correctly protected by the 30 amp breaker for your pedestal.
I glanced over the latest post and didn’t see this clearly covered. If it was I am sorry.

PS: This is also a safe cable to use in park that may only have a 30 amp pedestal.

Originally Posted by roadglide

This is for home use. I have 30 A pedestal 30 amp cable the receptacle is bad . I ordered 5o A yellow receptacle I would like to wire my cable 30 amp cable. I think it’s straight forward. I could use some advice on wiring the 30 amp black ,white and green to this plug .


I am assuming that the cable shown in the picture below is your 30 amp cable and is a 3/10 cable.

Originally Posted by roadglide

Electrician said white, Green, and black to the Y. 30 amp plug in pedestal to a 50 amp RV plug , Still 30 AMPs . It’s not code but nothing will happen. I will Check it with a meter .

The two RED statements scare the deification out of me!!!


The directions in the Bold Blue quote at the beginning of this reply will give you a safe solution to your issue, if you insist on using a lighter wire than 10 gauge, I hope you have a good Fire Insurance policy on the 5er and Pole Barn!!

[flybouy]

I think this is beyond your skill level. No disrespect, just don’t wish to see you get in over your head here. Get a qualified electrician who knows how to wire RV specific circuits. Or, for less money buy a 30 amp shore cable and 30 self inflicted fire due to improperly wiredamp to 50 amp adapter.

As for your Fire insurance it may not cover “self inflicted damage from improper wire work”.

[roadglide]

Originally Posted by rhagfo

Roadglide, if you are still considering using a 14 gauge wire to make your cord I am done with this post, as you are looking to burn down your pole barn and 5er!

You stated before that you had a 30 amp cord and that the trailer end (female) end was bad. my response was:





The two RED statements scare the deification out of me!!!


The directions in the Bold Blue quote at the beginning of this reply will give you a safe solution to your issue, if you insist on using a lighter wire than 10 gauge, I hope you have a good Fire Insurance policy on the 5er and Pole Barn!!

Yup like posted many times in the thread 3-10 wire is 30 amp rv cable .

[roadglide]

After spending 10 man hours researching. I came to terms With the posts . This the the way I started and think it’s right

[flybouy]

One issue I’m struggling with is you keep referring to a 15 amp cord. So, IF you are using the 30 amp cord in your post #23, AND it’s a 10 gauge 30 amp wire AND you replaced the female end with what you last posted a picture of, then yes that’s what we have all been talking about. But, the jumper you added appears to be smaller than 10 gauge wire. It should be the same size wire or it could overheat.

[rhagfo]

Originally Posted by roadglide

After spending 10 man hours researching. I came to terms With the posts . This the the way I started and think it’s right

It is only correct if that black jumper, is a section of 10 gauge wire.