Hi listers,
I have some difficulties to get information concerning the standard color cables in electricity.

in alternative :
black for Line
blue for neutral
grenn/yellow for earth

in continuous current:
+ :
- (or 0V) :

for APIS:
input
output
dry contacts

Do you know the european standards for wiring.

Thank you for your help.
I did not found any information on internet

JEff
[email protected]

 

EEC standard for 3 phase line is black (380v to 460v AC)

Single phase is black 220 to 250 v connect with netrual

110v AC control circuit red
24v DC control circuit is blue

lower than 24v not sure!

Neil Warnes EES engineer

 

hi,

well, I haven't found any official document ... yet, but as far as I know (in fact is more like "what I use") it's something like:

DC - blue
AC - red
PEN- green/yellow

this colours are for the comand and control circuit.

as for the main circuit I'm usually using grey

I'll be looking for that standard,

best regards.

 

Americas

AC:
Black - Hot AC
Red - Control AC
White - Neutral

24VDC:
Dark Blue - (+)
Light Blue - Control
White w/ Blue Stripe - (-)
Orange or Yellow - Safety Circuits

Euro:

AC:
Black - 3 phase AC
Brown - 1 phase AC
Blue - Neutral

24VDC:
Brown - (+)
Blue - (-)

Not sure about DC control wiring - I think you use brown or blue depending on what line is being switched.

Also, I think the American standard above is also acceptable for Euro DC wiring.

 

Look under NFPA 79 section 16.1.3, this may help.

 

For AC Current the industry standard is:
120-240 VAC is Black, Red, Blue for Line and White for Neutral.
277-480 is Brown Orange Yellow for line and Gray or White for Neutral.

 

I generally use the following:

120VAC:
If for U.S. application:
L=Black
N=White
G=Grn/Yel

240VAC:
L1=Black
L2=Red
N=White
G=Green or Grn/Yel

If for overseas application including Europe:
L=Brown
N=Blue
G=Green or Grn/Yel

It's hard to make a determination for overseas AC applications, however, unless you know what continent your project is going to, because there
are several different supply voltages and types to account for.

DC:
I always use the European colors because I never know if my projects are
going to make it overseas or not, and they're fairly well accepted in
the U.S. as well:

+DC=Brown
0VDC=Blue

If multiple DC voltages are used in a project:

+24VDC=Red
+12VDC=Orange
+5VDC=Yellow
0VDC=Black

-OR-

+24VDC=Brown
+12VDC=Orange
+5VDC=Yellow
0VDC=Blue

I/O? Most 3-wire sensors are usually:

+VDC=Brown
0VDC=Blue
Signal=Black

Hope this helps...
CP

 

Search back through the control.com archives, we've been through this a few times. In Europe you need to comply with one of the harmonised
standards, For example you will find EN60204 and associated EuroNorms will specify cable types and colours, as well as general safety rules.

Marc Sinclair

 

NFPA79 Electrical Standard for Industrial Machinery

Para 16.1.1

BLACK - Line/load/ and control circuit at line voltage (generally 460V)
RED - AC Control circuits (generally 120V)
BLUE - DC control circuits
YELLOW - interlocks (external powered)
GREEN - Ground (yellow stripe allowed)
WHITE - Neutral
WHITE with BLUE STRIPE - Grounded DC circuits

Bob Peterson

 

It depends in what country you are in Europe.
For the Netherlands it's 230 V AC
L=Brown
N=Blue
G=Green/Yellow
Wiring after switch=Black

 

i have a milwaukee screw gun
im in the uk
need to know wiring colours ?
black, white.,green
and can i run it from a 110v transformer

 

The european standards for wiring is the EN60204.
You'll find the colors by #14.2 in this standart.
Black: Main electrical circuit (AC and DC)
Red: Control electrical circuit (AC)
Blue: Control electrical circuit (DC)
Orange: External energie
Light blue: Neutral
Green/Yellow: Ground

Price for the standart EN60204 ~130.-$
(This european standart is to compare also with the NFPA79)

 

I know the united Kingdom standards for wiring.

Red is live
Black is Negative/Neutral
Green/Yellow Stripped is Ground

I am still looking if there is a difference for
European wiring standards. Namely Switzerland.
Does anyone else know? Please reply at my e-mail.

Thanks a bunch

 

You'll find the colors by #14.2 in this standart.
Black: Main electrical circuit (AC and DC)
Red: Control electrical circuit (AC)
Blue: Control electrical circuit (DC)
Orange: External energie
Light blue: Neutral
Green/Yellow: Ground

 

Yes, in Switzerland it's all neutral :^)

Regards

cww

 

hi,

well, I haven't found any official document ... yet, but as far as I know (in fact is more like "what I use") it's something like:

DC - blue
AC - red
PEN- green/yellow

this colours are for the comand and control circuit.

as for the main circuit I'm usually using grey

I'll be looking for that standard,

best regards.

I know this is an old tread...nevertheless,
what is the bizarre history behind the standard industry practice of blue color wire for all +24VDC wiring in an industrial control panel (with the exception of a grounded 0 volt / negative) and then all wire is identified with wire number labels to help in troubleshooting down the road.

I am curious: circuits, sensors, & actuators wiring, blue is neutral, brown/black is +24DC. Do you know the reason/history of the switching around of the colors for panels? Also if all the wires are blue, I guess the only way to tell which wire is which is by wire labels and referring to a schematic?