How to make y split extension

[Thenoob]

So I am building an extension in my shop to run some 30 amp appliances and I just wanted to split the outlet and make a Y like this product
Would I just use a junction box and then take some wire nuts and connect the 3 + together then the 3 - and finally the 3 grounds? Then just wire up the plug and receptacles?

Any information appreciated.

 

[Megawatt]

So I am building an extension in my shop to run some 30 amp appliances and I just wanted to split the outlet and make a Y like this productView attachment 54011
Would I just use a junction box and then take some wire nuts and connect the 3 + together then the 3 - and finally the 3 grounds? Then just wire up the plug and receptacles?

Any information appreciated.

Is that cord going to have 120vac or 240vac

 

[Thenoob]

Is that cord going to have 120vac or 240vac

It will be 240

 

[Megawatt]

It will be 240

That makes more since, when I saw the plug configuration it about had to be 240vac
[automerge]1574375326[/automerge]

So I am building an extension in my shop to run some 30 amp appliances and I just wanted to split the outlet and make a Y like this productView attachment 54011
Would I just use a junction box and then take some wire nuts and connect the 3 + together then the 3 - and finally the 3 grounds? Then just wire up the plug and receptacles?

Any information appreciated.

First off what you want is what we call a spider box. I would have at least a 6x6x4 inch PVC box for box fill calculations and yes you can splice them but make sure you use strain relief connectors to protect your cables