[QUOTE=njhussey;67784 This is now not a plain DIY router but will be at work so I'm going to try and be as safety concious as possible. I'll come up with the number of relays ill need and then see which way to go.]

Very good point - I was stuck in the DIY mindset but that's not where you are with this build. This is a machine for use at work, possibly by others, so that puts things in a different light. I know this has been debated numerous times on the forum but yes in this case I'd be following industry standards so carry on !