Not well addressed. You could - request a formal interpretation from NFPA asking if light blue leads would be sustantially equivlaent to white or gray as described in 400-22c, or - request a code change to appear elsewhere in the code.
Bob [email protected] wrote: > The referenced NFPA 70 section 400-22c seems to apply only to appliances with > jacketed cords. What about industrial equipment? > > Mike Sherman > FSI International > > In a message dated 4/19/1999 1:32:11 PM Central Daylight Time, > [email protected] writes: > > << About twenty years ago, the a group in the cable and computer industries > gathered together all the colors used worldwide for conductor identification > and > tried to come up with a worldwide compromise. The light blue(neutral), brown > (phase), and green/yellow (earth) were the best choice to avoid miswiring > somewhere in the world. The US NEC was changed specifically to clarify this > compromise (ref. NFPA 70 clause 400-22c), taking light blue as close to > white > or gray. > > You can probably get away with sending the US customary colors (white, black, > green) to some countries, but you will have to specifically check codes in > each > case. Don't think an answer from one European country will answer for all of > Europe. Note: NFPA is a US originated organization working to promote itself > internationally, but does not apply to Europe except in some specific cases > of > harmonization. The absence of a European Norm does not mean no laws apply. > National or local laws would be applicable. > > Since we have a well researched solution, why fight it? Misunderstandings > when > it comes to wiring power cords can be lethal, a terrible price to pay for > getting away with something less. > > Bob Johnson > > "Crane, Lauren" wrote: > > > > Is it acceptable to ship equipment to Europe with neutral conductors > (hook > > > up wire) that is white, particularly if the ends are marked with the > > > letter 'N' ? > > > > > > It seems to me that this would be acceptable to both the Machinery > > > Directive and the Low Voltage Directive. Neither of these directives have > > > a requirement for wire color in their Essential Requirements. > > > > > > Marking neutrals in this manner conforms to NFPA-79, an appropriate, > > > though US National, design standard for large semiconductor manufacturing > > > equipment. > > > > > > Conforming to NFPA-79, I think, demonstrates adequately addressing > > > electrical hazards to the extent of the concern of the Machinery > Directive > > > and Low Voltage Directive > > > > > > EN 60204 requires that neutrals be colored light blue ONLY IF COLOR IS > > > USED TO IDENTIFY THEM. Quoting section 15.2.3 "Where a circuit includes a > > > neutral conductor identified by colour, the colour shall be light > > > blue...". > > > > > > Note that the definitions section of EN 60204 (3.38) says that the > neutral > > > conductor is assigned the symbol 'N'. > > > > > > This is echoed in EN60439 "Specification for Low voltage switch gear and > > > control gear assemblies Part 1. Specification for type-tested and > > > partially type-tested assemblies." section 7.6.5.2 which says in part > "Any > > > neutral conductor of the main circuit should be readily distinguishable > by > > > shape, location, marking or colour..." > > > > > > I would be interested to know if anyone has experiences with this issue. > > > > > > Thanks in advance..... > > > > > > Lauren Crane > > > Eaton Corporation > > > > > > [email protected] > >> > > --------- > This message is coming from the emc-pstc discussion list. > To cancel your subscription, send mail to [email protected] > with the single line: "unsubscribe emc-pstc" (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list administrators). --------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
