Power cord adapter
Hotshot
Joined: Oct 2015
Posts: 19,706
Likes: 12,845
From: Wyoming
Have any of you guys built your own 50 amp extension cords?
I have 50 amp 220v in my garage. While my trailer is only 30 amp, the 50 amp circuit is far more capable than the other circuits available in the garage. The closest one to the trailer is only 15 amp.
I could use my 50->30 dog bone at the end of the 50 amp extension. I'm thinking 50 amp extension in case I ever need to bring my TIG welder out to do something on the trailer.
I have 50 amp 220v in my garage. While my trailer is only 30 amp, the 50 amp circuit is far more capable than the other circuits available in the garage. The closest one to the trailer is only 15 amp.
I could use my 50->30 dog bone at the end of the 50 amp extension. I'm thinking 50 amp extension in case I ever need to bring my TIG welder out to do something on the trailer.
Tuned
Joined: Jul 2003
Posts: 274
Likes: 20
You will likely find that the 50 amp 220v plug in your garage only has three conductors (2 hot, 1 ground), as it only supplies 220 volts.
The 50 amp RV plug has four conductors, because it actually functions as two separate 50 amp, 110v circuits. So it has 2 hots, a neutral that carries the unequal load back from the hots, and a ground. You can't access the required 110v for your trailer from a 220v household plug. More than a few people have fried all of their trailer appliances by accidently sending 220v into the trailer.
The 50 amp RV plug has four conductors, because it actually functions as two separate 50 amp, 110v circuits. So it has 2 hots, a neutral that carries the unequal load back from the hots, and a ground. You can't access the required 110v for your trailer from a 220v household plug. More than a few people have fried all of their trailer appliances by accidently sending 220v into the trailer.
Tuned
Joined: Dec 2001
Posts: 418
Likes: 24
From: Greeneville TN USA
You will likely find that the 50 amp 220v plug in your garage only has three conductors (2 hot, 1 ground), as it only supplies 220 volts.
The 50 amp RV plug has four conductors, because it actually functions as two separate 50 amp, 110v circuits. So it has 2 hots, a neutral that carries the unequal load back from the hots, and a ground. You can't access the required 110v for your trailer from a 220v household plug. More than a few people have fried all of their trailer appliances by accidently sending 220v into the trailer.
The 50 amp RV plug has four conductors, because it actually functions as two separate 50 amp, 110v circuits. So it has 2 hots, a neutral that carries the unequal load back from the hots, and a ground. You can't access the required 110v for your trailer from a 220v household plug. More than a few people have fried all of their trailer appliances by accidently sending 220v into the trailer.
Hotshot
Joined: Oct 2015
Posts: 19,706
Likes: 12,845
From: Wyoming
Tuned
Joined: Jul 2003
Posts: 274
Likes: 20
Since you state that you ran only three conductors and used the conduit as a fourth conductor it doesn't sound like you have a 4-pole female receptacle in your garage. If that is the case how are you proposing to build an extension cord that has a 3-pole male plug but a 4-pole female receptacle?
Hotshot
Joined: Oct 2015
Posts: 19,706
Likes: 12,845
From: Wyoming
Does the 50 amp, 220V receptacle that you wired in your garage have a 4-pole receptacle like an RV uses, or a 3 pole receptacle matching many 220V appliances and tools? That is the crux of the issue.
Since you state that you ran only three conductors and used the conduit as a fourth conductor it doesn't sound like you have a 4-pole female receptacle in your garage. If that is the case how are you proposing to build an extension cord that has a 3-pole male plug but a 4-pole female receptacle?
Since you state that you ran only three conductors and used the conduit as a fourth conductor it doesn't sound like you have a 4-pole female receptacle in your garage. If that is the case how are you proposing to build an extension cord that has a 3-pole male plug but a 4-pole female receptacle?
Tuned
Joined: Jul 2003
Posts: 274
Likes: 20
With only 3, 6awg cables? Neat trick, and certainly not to code.
Good luck with your project. I'm out...
Good luck with your project. I'm out...
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