"R.c.d. I Put this on incoming feed from meter to old type Wylex box up date to plug in m.c.b.s saves having to replace with new consumer unit If your not doing a new rewire switches off all circuits if there is earth leakage fault also use as isolating switch to work safely on consumer unit The supply company's will not in this area fit an isolating switch you have to withdraw their fuse does not make sense because they fit seals which are not supposed to be broken but they expect you to work on a live box when you need to update to new consumer unit ? Why don't they fit 100amp isolating switch for safety perhaps to expensive not making enough profit should be in the IEEE regs"
"Replaced a no-longer-made GE 304/28031-801 as a straight swap into the consumer board.
Worked as it should out of the box, and seems better made than the GE that it replaced. Note that the wiring inlet/outlet has a tiny flat plate which is loose, that you need to take care is at the bottom/back of the hole before poking in the wires. The wires fit between this flat plate and the moving one that screws down onto the wire. Be careful the wire doesn't go behind that flat plate!
Very glad Screwfix is open on a Sunday, as the old GE decided not to play anymore on Saturday night."