You're probably thinking of the requirement of a switched light in
every interior room. I don't know of a reason one would need one on the
outside of a building. I'm not up on code for residential and such
The requirement for a switched light outside wouldn't make sense from
a common sense standpoint.
"For dwelling units, attached garages, and detached garages with
electric power, at least one wall-switch controlled [light] shall be
installed to provide illumination on the exterior side of outdoor
entrances or exits with grade level access."
Vehicle doors are not included.
Maybe you should get another book.
alt.home.repair gets more questions on residential wiring and code.
Exception to (A)(2)(a), (A)(2)(b), and (A)(2)(c): In hallways, stairway, and
at outdoor entrances, remote, central, or automatic control of lighting
shall be permitted.
A motion detector is an automatic light control. Also, the location of the
fixture is not specified, only that it must light up the exterior of the
I missed the exception.
Some of the motion detectors have a feature where if you turn the power
off then on with a short interval the light stays on. If I was
installing an exterior light I would have a switch before the sensor and
Now that you mention that, I'm curious what sort of differences there
are. Being the sort that I am, I tend to look at this stuff wherever I
go, don't recall seeing anything unusual about domestic wiring in
Canadian homes I've been in.
There is nothing unusual about Canadian vs US wiring but the codes are not
completely in step and there may be differences between provinces, just as
there are differences between states. I do know that 3 prong outlets became
common here before they did in the US. The process of bringing codes to the
same standards is still an ongoing thing, requiring meetings in places such
as Miami in the winter, and Banff in saummer.
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