Background: I moved, previous house had a 4wire dryer outlet, new house has 3 wire. I have 240v system, I don't have anything inside the control box powered via 120v. I'm using a 10/4 30a power cable with an inline GFCI (same one Kal has on the electric brewery).
Please tell me if my logic/steps are correct:
-I'm going to check behind the 3wire outlet to see if there's a ground wire run. If so, i'll simply install a 4 prong outlet, swap the dryer's cord to 4 wire and be done.
-Assuming there isn't a ground wire hiding back there, I need to check if the neutral and ground are bonded in the panel correct?
-Assuming the neutral and the ground are bonded in the panel, I can split the neutral into two wires, one feeding the ground wire on my cable directly, and one feeding the neutral which runs through the GFCI.
-Can I make a small junction box (smaller than a spa panel) to break out the neutral into two wires, and everything will work?