[pdxoregon]

A lot of wires I deal with (industrial enclosures and equipment that has to meed EU codes) is no longer black/white, it is now brown/blue.

Always seemed to have had a mental block remembering which was line and neutral.

now I don't

at 2:38

 

[ddawg16]

Color codes.....great subject.....NOT.....

Black is hot....if it's 120AC....or common if it's DC.

Blue is typically 24Vdc...unless it's the common for 240Vac.

Red....3rd wire of 12/3....or panel wiring.

Yea....it get confusing sometimes.....

 

[micromind]

Here's how I remember.....neutral is connected to ground which is brown but IEC is stupid so it's the opposite, brown is hot.

 

[Arrow3030]

Dawg, blue is common for 240vac? I think you mean blue is common for 24 v or a hot for 3 phase 240 delta or 208 Y

 

[Tom738]

To make it even more consistent, black is hot for electric wiring but is usually ground or V0 for electronics. Because it's best to have the things that can kill you indicated as inconsistently as possible.

 

[micromind]

Dawg, blue is common for 240vac? I think you mean blue is common for 24 v or a hot for 3 phase 240 delta or 208 Y

In a European single phase system, blue is the neutral (grounded), brown is hot (240AC, they don't have 120) and green w/yellow stripe is ground.

Here, blue is usually phase C of a 120/208 or 120/240 3Ø system and often one side of 24AC. Brown is usually phase A of a 277/480 system.

 

[Arrow3030]

Right...obviously he was talking euro colors. My apologies dawg. I associate blue with cold which means neutral. That doesn't totally make sense but it works for me. I have a similar method for fixture wire. Ribbed for her pleasure which means neutral. Makes even less sense but again, it works for me.

 

[ddawg16]

Wait until you start doing EU control systems.....you will love/hate 24 VDC

 

[FrodoOne]

A lot of wires I deal with (industrial enclosures and equipment that has to meed EU codes) is no longer black/white, it is now brown/blue.

Always seemed to have had a mental block remembering which was line and neutral.

now I don't

The "Colour Code" chart in https://en.wikipedia.org/wiki/Electrical_wiring may be of interest.

 

[Speedy Petey]

I always remembered it by the face that blue rhymes with neutral.