50 amp contractor extension cord locking connectors

[1190R]

A friend gave me a spider box for power distribution
I would like to buy an outdoor rated 50 amp extension cord with the correct locking connector
What type of connector and what gauge wire should I be looking for?

 

[The Cobbler]

how long of a run do you plan to want, you need at least #8

 

[wyliesdiesels]

thats an old spider box. the 50a receptacle is an old style NEMA 10-50 3 prong non grounded 125/250v. you should replace it with a 14-50 4 prong receptacle but the physical size wont be the same.

 

[1190R]

how long of a run do you plan to want, you need at least #8

50 feet Cobbler

 

[1190R]

thats an old spider box. the 50a receptacle is an old style NEMA 10-50 3 prong non grounded 125/250v. you should replace it with a 14-50 4 prong receptacle but the physical size wont be the same.

Yup. It's pretty old Wylie
Are you saying I'm going to have to modify the metal box?

 

[1190R]

thats an old spider box. the 50a receptacle is an old style NEMA 10-50 3 prong non grounded 125/250v. you should replace it with a 14-50 4 prong receptacle but the physical size wont be the same.

Actually I think it is grounded
Looks like this type of connector is needed and it says it's 4-wire
I believe ground is on the side- see green arrow

 

[nadogail]

I would take the box to a good Wholesale house and buy the appropriate connectors and #6 AWG cable. You could get by with #8, but 6 gives you a greater margin of safety.

 

[wyliesdiesels]

Actually I think it is grounded
Looks like this type of connector is needed and it says it's 4-wire
I believe ground is on the side- see green arrow

aww i missed that 4th prong

make your own cord

HUBBELL CS6365L AC Plug CA STD 50a 125/250v Male - Electric Plugs - Amazon.com

HUBBELL CS6365L AC Plug CA STD 50a 125/250v Male - Electric Plugs - Amazon.com

www.amazon.com

 

[Bert_]

Actually I think it is grounded
Looks like this type of connector is needed and it says it's 4-wire
I believe ground is on the side- see green arrow

That's the one. Those are pretty common on those spider boxes.

 

[alfredeneuman]

Actually I think it is grounded
Looks like this type of connector is needed and it says it's 4-wire
I believe ground is on the side- see green arrow

Along with the case the pin in the center is also a ground.

 

[1190R]

Big thank you to everyone who posted