Thanks! I really appreciate you taking the time to explain this to me in detail. This is a weldless tri-clover fitting so it has an o-ring on outside of kettle to prevent leaking. There is metal to metal contact from the nut on the inside of kettle. Would this create the necessary ground?
Regardless it sounds like your telling me the safest way to go is swap out the dryer outlet and dryer plug to 4 wire. Does that impact the plug set up on my Still Dragon Controller or if I do that am I good to go?
So I went deep in the garage and found 4 wire dryer plug. So now if I change outlet to 4 wire how does it work with the plug for the kettle? I guess I have to change that also? but 10/3 from plug to SD controller only has 3 wires?
The nut on the inside of the weldless TC fitting will adequately ground the fitting to the BK, as long as you don't put an O-ring on both the inside and outside of the BK. The ground terminal on the element plug should be connected to the TC flange on the element (Stilldragon is responsible for this being done correctly.) Then the clamp that holds the two TC flanges together completes the BK grounding connection, even with the O-ring between the flanges.
The plug type you have is a NEMA 14-30, so you need to replace the dryer outlet with a NEMA 14-30 receptacle, and replace the plug on the cord to the Stilldragon controller with a NEMA 14-30 plug. Drawings for the NEMA 14-30 receptacle and plug are below:
When you replace the outlet, the green (or bare Cu) ground wire goes to the "G" terminal on the receptacle, the white neutral wire goes to the "W" terminal, and the red and black hot wires go the the "X" and "Y" terminals. "X" and "Y" terminals are interchangeable w.r.t. the red and black wires, but it is good practice to keep the letter to color assignment consistent within your project.
When you replace the plug on the Stilldragon cord, the green wire goes the the "G" terminal, the white wire becomes a virtual red wire, and with the black wire they connect the the "X" and "Y" terminals. As mentioned earlier, you should place some red electrical tape around the ends of the white wire in the Stilldragon cord. Note that there will be no connection to the neutral "W" terminal in the new four prong Stilldragon cord plug. You don't need the neutral with this design.
Finally, this video shows how to redo the connections for the four wire cord in the dryer. [ame]https://www.youtube.com/watch?v=_eXpYn_vogQ[/ame]
Brew on
