"McKavity"
** The reasons are partly historical, partly practical and partly human
safety.
1. When homes were first supplied with mains electricity, circa 100 years
ago, the ONLY purpose was lighting - as appliances came along (
radios, vacuum cleaners, room heaters etc) they were plugged into the light
sockets.
2. Appliances typically draw far more power than lighting does, so will
easily exceed the capacity of the cables fitted in the ceiling for
ighting - means a separate ( higher capacity) power circuit for appliances
is needed, preferably fitted at floor level.
3. If the ( now independent) power circuit is over-loaded and causes the
fuse to blow, it does not plunge the house into darkness - which would be
very unsafe for the people inside at night.
Then there is the issue of safety grounding, essential for appliances but
not required for ordinary lighting fixtures. So power circuits have three
pin sockets and 3 wire conductors, unlike typical lighting.
BTW:
Is your Christian name " Phil " by any chance .................
Are you a dentist ?
..... Phil
As well as these reasons, another might be because In Queensland
regional areas (dont know if other states did this) many years back
light and power were separately metered, I was told "lighting was
charged at more per KWH because it used less power"
One of the first places I worked at, the boss had installed mostly
plug in lights, in order to save money. He still did this in the early
80s, out of habit probably, long after the rules had changed
(He was the worst tight arse I have ever encountered. )
One of his favourite tricks was to save up his blown bulbs, jug
elements etc and when he stayed anywhere (at company expense) , he
would swap them over in the motel rooms he stayed in, bringing the
good ones back with him. He was so proud of this he would "educate"
apprentices etc to do this sort of thing, as well as forever carry on
about "the great depression" of the 1930's (probably to justify low
wages?).
Even once saw him bring in a totally fucked, and very ancient car
battery, and swap it into a company car while running, taking the good
one home. Then drove the car 150km for work, "couldnt start it" and
got the RACQ to replace it on the company expense account. He
possibly then swapped them back for all I know.