Definitly a difference.
Norway are following the EU in the way of this.
The main difference are the tradition of systems with
NO NEUTRAL This has implemented fuses in all wires, and when breaker became the rule, they are now sensing, and breaking all wires simultaneously, even neutral where those are. It is more and more focus on covers, and it shall not be possible to touch any wires or terminals without removing a cover (This makes even measuring a little more heavy, and you may often find missing covers to be replaced later by "lazy" workers".
You are not allowed to rewire your own home here, its extremely limited what you may do legally in your own house. It is common to have a main switch or breaker in all cabinets, something I have been missing in US homes.
Another difference may be the extremely long distances from the transformer to the consumer. On the countryside it may be several 1000 meters (~yds). This may cause considerable voltage drops, and instant water heaters are "unofficially banned".
dsk
