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Just become the proud (2nd) owner of 3 newish betapack3 to replace old analogue strand tempus. So bringing everything up to scratch First, I do know that all elecricity can kill, and 3 phase does it more efficiently, but... Quite a few text books and guides (recent 2010). Recommend separating phases into foh, flies, stage etc and to avoid mixing phases through patching or on bars etc and a six foot 2m rule on socket separation. Now the betapack can be on a 3 phase supply and it looks like this is split so each phase supplies 2 channels , so you have mixed phase in the box. our three will be single phase supply , but split two on one phase, one on another ( all as yet unidentified) but it is likely that some x-patching will occur. Now , rcd, mcb protection has come a long way , so is there anything practical or legal to be worried about, other than labelling for 400v . Current ABTT guides seems a bit hazy on this area What do people do, or think ?