gamblor6 is right the non seperated sockets would have to be removed to be sure the area is earth free. However instead of using 3 x Electrically seperated Tx's (which would have to be mounted in the DB cupboard area) supplying the bench sockets, I am trying to source some electrically seperated socket outlets (much like shaver socket outlets). If I can find some then the 3 bench areas can be supplied using 3 X conventional radial feeds. What do you think?