What's the difference between a cooker outlet plate and a Cooker connection unit? Is an outlet plate for when a cooker doesn't have any way to connect to circuit from the cooker unit itself and that's when you attach an outlet plate to the wall and then have cable go from the cooker to the outlet plate and then to a CCU, then from the CCU to cooker Isolator switch? or is that overkill and I'm misunderstanding it completely. Any clarification would be greatly appreciated 
