Re: Norwegian power - help transforming to 110v
In Norway, you have three kinds of power available:
2 hot phases and earth. 230v phase-phase, 115v phase-earth. Normal 16A wall socket.
3 hot phases and earth. 230v phase-phase, 115v phase earth. Blue CEE 3-phase, or square three phase connectors.
3 hot phases, neutral and earth. 380(400)v phase-phase, 230v phase-neutral, 190v phase-earth. Red Cee 3-phase connectors.
There are transformer options available from major rental houses that will work with 115v gear, just never, ever earth-lift anything. If they already provided you with something that works, you should be fine.
Hope this helps 
Btw: welcome, hope you enjoy your time here.