What type of Plug?

[Exayu]

I am looking to build a build an electric brewery. I am slowly progressing with my build. I was wondering if it would be alright to have a 20A plug and with outlet from the control box to elements. The elements at are 4.5kW so that means at 240V I will have 18.75Amps.

 

[aquenne]

That will be cutting it too close. If your running a new feed, go with 30A 10Ga.

 

[P-J]

I am looking to build a build an electric brewery. I am slowly progressing with my build. I was wondering if it would be alright to have a 20A plug and with outlet from the control box to elements. The elements at are 4.5kW so that means at 240V I will have 18.75Amps.

That is an extremely bad idea. The 20A plug and outlet are for 120V.

Do not do that.!

 

[malador]

That is an extremely bad idea. The 20A plug and outlet are for 120V.

Do not do that.!

Wait, I missed something. How do you know that the 20amp receptacle and plug are 120?

 

[malador]

I am looking to build a build an electric brewery. I am slowly progressing with my build. I was wondering if it would be alright to have a 20A plug and with outlet from the control box to elements. The elements at are 4.5kW so that means at 240V I will have 18.75Amps.

What type of cord and plug are you using?

 

[P-J]

Wait, I missed something. How do you know that the 20amp receptacle and plug are 120?

I'm guessing because he's trying to save a buck or 2 by using an underrated plug and outlet. 240V 20A outlets & plugs are rather high in price.

 

[Homercidal]

That will be cutting it too close. If your running a new feed, go with 30A 10Ga.

In addition, you will want to use GFI for the whole system, to protect you from accidental electrocution.

It costs more, but it will be worth it when you suddenly have the GFI tripping and realize something leaked or went wrong and then you'd be happy it was the GFI and not you.

 

[Exayu]

Cool thanks for the info. The electrician at our company had some spare 30A locking plugs Now its time for some switches I was wondering if these will work http://www.ebay.com/itm/5pcs-DPDT-O...922?pt=LH_DefaultDomain_0&hash=item5ae6771e8a

 

[malador]

Cool thanks for the info. The electrician at our company had some spare 30A locking plugs Now its time for some switches I was wondering if these will work http://www.ebay.com/itm/5pcs-DPDT-O...922?pt=LH_DefaultDomain_0&hash=item5ae6771e8a

Nope. You need a 20 amp double pole. Plus those switches are small and would be hard to land a #10, or even #12 wire on.