Wiring for car port.

[Grinding- wheel]

Guess I should not say this here but I don't currently have a garage so all my Shop work is done in my car port. There is a door outside my utility room that leads to the car port. There is one 115v plug in the car port it is on a 15 amp plug. No clue how its wired its an old house. If everything in the house is off I don't have any issues running a table saw cop saw. When the family is home and everything is running I'll pop the breaker. My smaller 4.5 inch dewalt grinder works fine and won't pop the breaker if stuff is on in the house, but the 7.5 inch will. Right now I'm running extension cords from the utility room to run my welder and tools. I was originally planning on running a 230v nema 6-50 with 6\2 or 6/3 whichever it is I always forget. However I'm figgureing if I'm going to run this I might as well add at least one more 115v on a 20 amp circuit. The intent for the 115v plug will be for running shop tools such as listed above. I'm going to use the existing 115v plug for a fan or stereo etc. I know you can pull a 115v off of a 230v. If I build a small outdoor box with a nema 6-50 and a 115v plug split off the 230v how many amps will the 115v carry? Is it 50 amps per leg or 25 amps per leg? I'm trying to decide if I should run a small 60 or 70 amp sub box so the 115v can have its own breaker. I don't think its necessary because at no point in time will my welder be running along with anything else. If I don't add a second 115v plug my other idea was to build a box / adapter to mount to my welding / work table. Plug the 230v in and have a 115v pulled off the 230. Any way I'm looking for suggestions / advice

Thanks.

 

[pattenp]

Where is the main panel location and distance in relationship to the carport? Does the main panel have open spaces?

 

[zmaxmotorsports]

Where is the main panel location and distance in relationship to the carport? Does the main panel have open spaces?

 

[Grinding- wheel]

O I also forgot should I run this 230v with the standard two hots and a ground or should I also run a neutral? Like make the wall plug a nema 14-50 and build an adapter for welder in case I ever need that type of settup for a tool of some kind. Just trying to think to the future I don't want to do it twice.

 

[ishiboo]

Guess I should not say this here but I don't currently have a garage so all my Shop work is done in my car port. There is a door outside my utility room that leads to the car port. There is one 115v plug in the car port it is on a 15 amp plug. No clue how its wired its an old house. If everything in the house is off I don't have any issues running a table saw cop saw. When the family is home and everything is running I'll pop the breaker. My smaller 4.5 inch dewalt grinder works fine and won't pop the breaker if stuff is on in the house, but the 7.5 inch will. Right now I'm running extension cords from the utility room to run my welder and tools. I was originally planning on running a 230v nema 6-50 with 6\2 or 6/3 whichever it is I always forget. However I'm figgureing if I'm going to run this I might as well add at least one more 115v on a 20 amp circuit. The intent for the 115v plug will be for running shop tools such as listed above. I'm going to use the existing 115v plug for a fan or stereo etc. I know you can pull a 115v off of a 230v. If I build a small outdoor box with a nema 6-50 and a 115v plug split off the 230v how many amps will the 115v carry? Is it 50 amps per leg or 25 amps per leg? I'm trying to decide if I should run a small 60 or 70 amp sub box so the 115v can have its own breaker. I don't think its necessary because at no point in time will my welder be running along with anything else. If I don't add a second 115v plug my other idea was to build a box / adapter to mount to my welding / work table. Plug the 230v in and have a 115v pulled off the 230. Any way I'm looking for suggestions / advice

Thanks.

How about a 50/20 or 50/30/20 RV panel? Would be pretty much plug and play except you would want to swap out the 240/120 outlet with a 6-50. (Or make an adapter cable but that'd be pricey)

http://www.homedepot.com/p/GE-100-A...it-Protected-Receptacles-GE1LU532SS/203393689

The 120v would have to have its own breaker. You need a neutral for 120v, you couldn't get 120v from your 240v without it. (Unless you installed a transformer of course, which would be pointless and way more than having a neutral.)

 

[Grinding- wheel]

Where is the main panel location and distance in relationship to the carport? Does the main panel have open spaces?

Main panel has space. Its in side the house. The I'll have to run the cable in to the attic. The total run from attic to box or plug location is just about 50 feet. Its just a hair over 40 ft ruff measurement from box to outside wall.

 

[Grinding- wheel]

How about a 50/20 or 50/30/20 RV panel? Would be pretty much plug and play except you would want to swap out the 240/120 outlet with a 6-50. (Or make an adapter cable but that'd be pricey)

http://www.homedepot.com/p/GE-100-A...it-Protected-Receptacles-GE1LU532SS/203393689

The 120v would have to have its own breaker. You need a neutral for 120v, you couldn't get 120v from your 240v without it. (Unless you installed a transformer of course, which would be pointless and way more than having a neutral.)

That would make things way easier. However may not be cost effective. What size cables would I need to run to that?

 

[ishiboo]

That would make things way easier. However may not be cost effective. What size cables would I need to run to that?

6/3 is good for 50A. If you plan on maxing out both receptacles you would need something larger.

 

[wyliesdiesels]

U said the house is old? What size service do u have?

Any large electric loads?

 

[Grinding- wheel]

U said the house is old? What size service do u have?

Any large electric loads?

The house is wired for 200 amp service. Several years ago the prior owners expanded the master bedroom and added on a second living room. All the plugs before the expansion are the nema 1-15 type (2 holes 15 amp circuit). The plugs in the expanded areas are nema 5-15 (3 hole 15 amp). The only two exceptions are the utility room and car port. They both have nema 5-15 but the utility room is a 20 amp circuit for the washing machine. The utility room is a dedicated plug the car port is not. There is a sub box inside the master bedroom. Its wired all strange but its all up to code. One of the future projects that we have planned for this house is to update the entire electrical system. Its so annoying to have to go to a different room because I need a 3 hole plug. I want nema 5-15's installed properly everywhere. The plugs in the car port area will be dedicated. I'm probably going to get one of those pre wired RV plug boxes with a 50 and 30 amp 240v and a 5-20T. I have several adapters to plug the welding machines I've had in. Basically I made a 2 foot whip with 6-50 female plug on one end and whatever plug I need on the other. I'm going to leave the RV plugs and just use an adaptor for the welding machines. My parents own an RV and one day I'm going get one.