thanks, that's helpful. the gutter vac came cheap at £300 so i bought it. you are quite right tho if id bought a new one, i wouldn't have jumped in with this one. with this size tho itll give me the chance to try out commercial work as well as domi.
i guess because of the size i'll hire a genny and compact work over a weekend. if i'm making enough money from it i;ll look to buy a genny in the future.
i was advised that i can run it off a transformer from the mains too, so although this is more hassle, i'll see if that works.