In article <beposp$afn$1@titan.btinternet.com>,
   Julian Mamo <julian.mamo@btopenworld.com> wrote:
> Would you know if the Earth was needed or better left off? Do you know
> which way the current is flowing and why there is a positive and
> negative in AC current.

 There's not. There's a line and neutral. Nor should an earth ever be left
off - if it's causing a ground loop there are other ways of sorting this.

Earths these days are only fitted to things that really need them.

-- 
*If one synchronized swimmer drowns, do the rest have to drown too?

    Dave Plowman     dave.sound@argonet.co.uk     London SW 12
     RIP Acorn