A few observations of my own:
AMERICAN SYSTEM
The first thing that struck me is all those EGCs drawn in green/yellow. OK, so an EGC is allowed under the NEC to have a yellow stripe now, but don't you normally reserve those for isolated grounds? The notes elsewhere do state "green or bare" which is fair comment, but I think the colors on the drawing are a little misleading for a "typical" installation.
While on the colors, look at the second small appliance branch. Again, we know that red could be used as hot, but is this typical? (Certainly not if Romex is used.) Anyone in the States feel that if they wanted to show some alternate use in a
typical home it would have been better to add a multiwire circuit?
Next, look at the listed cable sizes below the drawing:- #14 for a 20A small appliance cct???
Take a look at the diagrams in the notes for NEMA 10-30 and 10-50 receptacles too. They've got them the wrong way round! (Correct on the main drawing though.)
Seems I'd be nit-picking if I added that it isn't really a 2-phase service sd they state, but technically only single-phase.
FRENCH SYSTEM
They say "usually single-phase." That certainly doesn't agree with my findings. I'd say that most homes in France have a 3-phase service and 1-ph is the exception. I've seen mostly older places rather than new, so does anyone know if higher rated
single-phase services are becoming more common nowadays for new homes?
I can't figure out the part about having to break both phase and neutral simultaneously, then stating that rewireable fuses are no longer allowed but HRC fuses can be used. How can an HRC satisfy the "both poles" requirement?
BRITISH SYSTEM
One bit that looks a little suspect here is the lampholder shown wired directly into the ceiling pull-switch. They've shown it with brown/blue (i.e. flexible cord) colors, which suggests that the lamp pendant is connected directly into the switch. Is this supposed to be a combined pendant and
pull switch?
[This message has been edited by pauluk (edited 10-27-2002).]