C
Chris Carlen
- Jan 1, 1970
- 0
Hi:
I see a US 120V chassis wired:
AC line hot BLACK --> switched AC hot BROWN
AC line neutral WHITE (1) --> switched neutral LIGHT BLUE
I think I've seen the same arrangement in universal 120-240VAC equipment.
I'm wondering if it would be considered bad form to substitute gray for
the lt. blue for switched neutral, since lt. blue is harder to get, and
gray is mentioned in NEC as an acceptable "grounded conductor" (ie.,
neutral) color.
The trouble is that in USA neutral is expected to be at 0V, while in
Euro and other 220VAC areas, what is the lt. blue conductor?
Are euro and other countries with 220VAC a single phase w/ respect to
ground (one hot and a grounded neutral)? Or are they two 110VAC w/
respect to ground but antiphase w/ respect to each other as in USA?
But things get more complicated then with 240VAC in the USA which is
usually black and red hot conductors. What then would be a good pair of
colors for the switched 240VAC hots? Just stick with brown and blue?
There is a problem creating consistency here if the 220VAC wiring in
Euro and 220VAC regions is different from USA with it's anti-phase setup.
(1) or BLACK + WHITE stripe
--
Good day!
________________________________________
Christopher R. Carlen
Principal Laser&Electronics Technologist
Sandia National Laboratories CA USA
[email protected]
NOTE, delete texts: "RemoveThis" and
"BOGUS" from email address to reply.
I see a US 120V chassis wired:
AC line hot BLACK --> switched AC hot BROWN
AC line neutral WHITE (1) --> switched neutral LIGHT BLUE
I think I've seen the same arrangement in universal 120-240VAC equipment.
I'm wondering if it would be considered bad form to substitute gray for
the lt. blue for switched neutral, since lt. blue is harder to get, and
gray is mentioned in NEC as an acceptable "grounded conductor" (ie.,
neutral) color.
The trouble is that in USA neutral is expected to be at 0V, while in
Euro and other 220VAC areas, what is the lt. blue conductor?
Are euro and other countries with 220VAC a single phase w/ respect to
ground (one hot and a grounded neutral)? Or are they two 110VAC w/
respect to ground but antiphase w/ respect to each other as in USA?
But things get more complicated then with 240VAC in the USA which is
usually black and red hot conductors. What then would be a good pair of
colors for the switched 240VAC hots? Just stick with brown and blue?
There is a problem creating consistency here if the 220VAC wiring in
Euro and 220VAC regions is different from USA with it's anti-phase setup.
(1) or BLACK + WHITE stripe
--
Good day!
________________________________________
Christopher R. Carlen
Principal Laser&Electronics Technologist
Sandia National Laboratories CA USA
[email protected]
NOTE, delete texts: "RemoveThis" and
"BOGUS" from email address to reply.