"Ross Herbert" wrote in message
...

Sure, you can use a single GFCI (usually DIN rail mount) in the
distribution box to supply up to the maximum number of outlets on any
branch circuit. But, you can also buy GFCI outlets which fit the
standard wall outlet mounting box.
http://www.passandseymour.com/news/view.cfm?id=158

I suspect they were developed to make it easy to convert existing
outlets to GFCI protected circuits without interfering with the
distribution board wiring. It is certainly a more expensive way to go
compared to fitting a single GFCI in the distribution box, that's for
sure.

How it's done in the USA/Canada is that one GFI is put in an outlet box and
then a number of outlets are run from that so all those downstream are
protected.
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N