220v panel with 110v option - Home Brew Forums
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Old 12-27-2011, 12:58 AM   #1
mazultav
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Is there anything inherently dangerous about the following idea? I want to have a 110v input and output along with 220v so I can use my panel to control a smoker. Can I just have a 110v outlet wire to one of the same hot legs as the 220v coming into the panel and.another on the same hot leg controlled by the ssr?
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Old 12-27-2011, 01:49 AM   #2
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With the appropriate GFCI breaker and wiring, there is no reason you can't or shouldn't run a separate 110v circuit from within your 220v panel. I'm doing that now with 220v running all the heater elements and 110v running the controllers, transformers, and pump.
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Old 12-27-2011, 01:56 AM   #3
mux
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Do you have a neutral in your control panel?

 
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Old 12-27-2011, 10:50 AM   #4
mazultav
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Yes. Rather it will
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two pints homebrew
kegs...............none :(
carboys...........Brass Knuckle Ale, Rustic Black Porter
hopville.

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-Hunter S Thompson

 
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Old 12-27-2011, 12:06 PM   #5
TrainSafe
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You will probably want to fuse that 120 circuit within your panel so that it doesn't need to be wired for 50a currents. That will allow you to use reasonably sized conductors for this circuit.

 
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Old 12-28-2011, 10:33 AM   #6
mazultav
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I plan to have a 120 v 15A outlet in and out of the panel.
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two pints homebrew
kegs...............none :(
carboys...........Brass Knuckle Ale, Rustic Black Porter
hopville.

"buy the ticket, take the ride, no sympathy for the devil."
-Hunter S Thompson

 
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Old 12-28-2011, 11:54 AM   #7
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Have you considered having only a 240V input, and using one of the hot legs and the neutral to create a 120V circuit, so you have both 240V and 120V outputs?

 
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Old 12-28-2011, 03:08 PM   #8
mazultav
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I have. I thought having the 120 input would simplify things. I guess not
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kegs...............none :(
carboys...........Brass Knuckle Ale, Rustic Black Porter
hopville.

"buy the ticket, take the ride, no sympathy for the devil."
-Hunter S Thompson

 
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Old 12-28-2011, 03:27 PM   #9
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240v operation can increase the power while reducing the amperage demand and the wire size. It is preferable for that reason. It does increase the watt density on the element, which might not be preferable. But, that's what a PID or PWM is for.
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Old 12-28-2011, 04:07 PM   #10
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I think the only advantage to running a separate 120V input is if you could run the whole system with it for some application, and then would not need access to 240V. If you plan to have access to 240V anyway, I would use it to create a separate 120V circuit inside the panel.

 
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