I have a garage with conventional power and light fitments. Power comes in via what appears to be armoured cable and goes into a good old fashioned fu sebox/mains switch. The box says 'maximum load 45 amps' and there are two f uses under a removable cover which are 5A and 20A for light and power respe ctively (I assume). Nice and simple for someone of my generation. :-) Now, I need to connect up a 3-phase lathe via a single-to-three phase conve rter. The lathe and converter to run it are both rated at 2.2kw or 3 horsep ower if you prefer. I also have a fairly substantial arc welder which is ca pable of up to 300 amps if fed by a 3 phase supply, or 220 amps via 230v si ngle phase. Would I be right in thinking the best thing to do here is install a mini di stribution board between the main fusebox and the new appliances (or replac e the fusebox altogether with it)? Everything is still running off of 230V to begin with, but at more than the 13A your standard sockets are capable o f sourcing. So should I fit out the new distribution board with a couple of 16A RCBOs if that's the way to go? Also the people that are supplying me the phase converter say that while it will happily run the lathe, it won't supply the welder for some reason. An yone know why not?