Idenitification for 3 phase circuit

[mbrooke]

Quick Question- brain freeze- what rule requires that a 3 phase circuits have color or tap to identify which phase is which? This this apply to apply 3 phase circuits or just that terminating to 3 phase equipment?

 

[electrofelon]

IIRC the only requirement for ID is if there is a high leg, and also if there is another voltage system in the building. For the latter, I don't remember if that applies only if the two system conductors share a raceway or enclosure.

 

[Besoeker3]

Quick Question- brain freeze- what rule requires that a 3 phase circuits have color or tap to identify which phase is which? This this apply to apply 3 phase circuits or just that terminating to 3 phase equipment?

We used to use red, yellow and blue with black as the neutral. Now we have the EU "harmonised" colours. Brown, black and grey with blue as the neutral.
Insane.

 

[iceworm]

... what rule requires that a 3 phase circuits have color or tap to identify which phase is which? This this apply to apply 3 phase circuits or just that terminating to 3 phase equipment?

IIRC the only requirement for ID is if there is a high leg, ....

408.3.E.1 Phase arrangement - ABC, and B phase for 4w, 3ph, delta
408.3.F.1 High leg identification
110.15 High leg marking - Orange

 

[mbrooke]

IIRC the only requirement for ID is if there is a high leg, and also if there is another voltage system in the building. For the latter, I don't remember if that applies only if the two system conductors share a raceway or enclosure.

Thanks

We used to use red, yellow and blue with black as the neutral. Now we have the EU "harmonised" colours. Brown, black and grey with blue as the neutral.
Insane.

I know, said it before I'll say it again: worst mistake ever

408.3.E.1 Phase arrangement - ABC, and B phase for 4w, 3ph, delta
408.3.F.1 High leg identification
110.15 High leg marking - Orange

Thank you for the code sections!

 

[kwired]

Quick Question- brain freeze- what rule requires that a 3 phase circuits have color or tap to identify which phase is which? This this apply to apply 3 phase circuits or just that terminating to 3 phase equipment?

You probably thinking of 210.5(C)(1) for branch circuits and 215.12(C)(1) for feeders. Both are similarly worded, but really only apply when there is more than one voltage system present on the premises. I don't find similar requirement in art 230 for services.