Help on how to make the connection

[FFFPatriot]

Greetings all. I have a trailer that I built that is framed like a house. What I want to do is have an rv like cord that I can unplug/ plug when I take it on the road. I have 2-2-2-4 aluminum wire that is ran underground that goes to a 100 amp breaker panel in my garage. The other end comes up from the ground next to the trailer. Inside the trailer, I have four 15 amp outlets that will be on it's own 15 amp breakers, and one 15 amp breaker for two small led shop lights. I have a 70 amp breaker panel ( not yet installed ) for the outlets and lights. What do I need to do to make the connection between the 70 amp panel and the 2-2-2-4 wire outside? I want to be able to have some kind of heavy duty cord ( about 6' long) that I can plug/ unplug when I take off on the road. I don't need to have any power in the trailer when I take off from home. This is a small 6' x 12' trailer that I've built for a mini weld shop. My welder is a Hobart Handler 140 110v welder. I'll be building a down draft welding table with a fume extractor that is a 6" duct fan that goes through the front wall to the outside. The lights, welder, and fume extractor will be running at the same time, and each device are on their own 15 amp breaker. I've talked to the sparkys at Lowe's and Home Depot, and nobody had an answer to a solution for me. I thought of installing an outdoor 100 amp panel on a post outside and wiring in a 50- (70?) amp female ended rv cord off of the outdoor panel that would plug into a male ended rv cord that's wired into the breaker panel inside of the trailer. Any and all advice would be greatly appreciated. Thanks in advance.

 

[FFFPatriot]

That’s what you want to mount to your trailer and the wire is to big to fit in the lugs. That’s why I wanted you to splice the wires in a 6x6x4 PVC box and what about the breaker. Can you put it on a 50 amp breaker in your panel. If you can’t its not going to give problems because you will have the trailer panel that you need to terminate your receptacle on a 50 amp breaker
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No you have to have a breaker to do this job. Please install a 50 amp breaker in your panel
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I want to help you do the right way and from what you told me, you have no way to cut it off without a breaker and that’s a code violation. I did not know that it was bolted to the buss. PLEASE install a 50 amp 240vac double pole breaker in your panel and then you will be legal. Thank you and I’m sorry for the confusion. Electrical Kills and blows up.

Okay, lets slowly take it from the top. The aluminum wires that are mounted to the buss bar in the panel in the garage need to be mounted to a 50 amp breaker instead, to be able to cut power to the outlet that the trailer will be plugged into, am I correct so far? Then the other end of the aluminum wires will go into the pvc box.
A 60 amp panel will be mounted inside the trailer. 8/3 with ground wire will be wired into the 60 amp panel and have a male end on it that will plug into a female end plug connected to the aluminum wire.
I'm a little fuzzy on the latter. I thought the picture I posted would be the ticket. I read the Q&As on it and somebody said they used it with the same wire I'm going to use.
Sorry for all this mis knowledge on my part and I really appreciate you walking through this with me.

 

[Megawatt]

Okay, lets slowly take it from the top. The aluminum wires that are mounted to the buss bar in the panel in the garage need to be mounted to a 50 amp breaker instead, to be able to cut power to the outlet that the trailer will be plugged into, am I correct so far? Then the other end of the aluminum wires will go into the pvc box.
A 60 amp panel will be mounted inside the trailer. 8/3 with ground wire will be wired into the 60 amp panel and have a male end on it that will plug into a female end plug connected to the aluminum wire.
I'm a little fuzzy on the latter. I thought the picture I posted would be the ticket. I read the Q&As on it and somebody said they used it with the same wire I'm going to use.
Sorry for all this mis knowledge on my part and I really appreciate you walking through this with me.

You are right up to the receptacle you mount on the trailer, it has to be wired to the panel you are installing inside the trailer because that will be your power to the whole trailers 60 amp panel and your disconnect will be when you unplug your receptacle. I know it’s a lot to take in but you seem to have it right and I hope what I just told you
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You are right up to the receptacle you mount on the trailer, it has to be wired to the panel you are installing inside the trailer because that will be your power to the whole trailers 60 amp panel and your disconnect will be when you unplug your receptacle. I know it’s a lot to take in but you seem to have it right and I hope what I just told you

When you splice the # 2. Aluminum to the 8/3 with ground in the box you will be making a whip that goes from the PVC box to the outside outlet which will be 8/3 to plug in the receptacle you showed me was the right one and it has to be wired to the panel so when you plug it into the receptacle your trailer will have power