Originally Posted by vnmyers13
If I remember right I think kegkits has an outline of how he made his electric kettle and used the smaller box.
Just stated that the hole for the element was drilled off center.
I did the conversion & wrote the article posted on the kegkits web site.
The first secret to using the single gang box is to drill the hole slightly off center, away from the ground lug. And if you are using a step bit that won't let you drill the hole off center, you will need to use a dremel tool to cut off the corner of the boss the ground screw is threaded into so that the nut spins easy.
The second secret is to strip the outer cover back about 2" to give you enough length to manuver the wires around and then to attach the ground wire last. If you don't attach the ground wire last the ground wire is in the way of the power wire screws.
You can also find the instructions on the instructables.com web site.