I have a multi-strand conductor (at least 12) #6 for runway lights leaving a regulator that is on a mechanical lug. Does table 8 (conductor properties) of the NEC apply to the # of strands that can be put in a mechanical lug, it states 7 strands. I thought that it did but I cannot find anything else to back it up. I told the contractor that if the used a compression lug that it would be OK. The wire can be wiggled and pull from the mechcanical lug, I do not know the manufacturer of the lug or I would ask them. Does anyone know of another code reference that I can use to back me up or should I ask any mechanical lug manufacturer?
12 strands on a # 6 conductor on mechanical lug
- Thread starter T's C6
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charlie
Senior Member
- Location
- Indianapolis
Solid, 7 strands, then 19 strands. Table 8 has normal conductor properties, there can be other configurations. This is from the UL White Book (in my opinion, the rest of your code book),
are for stranded wire only. Connectors additionally rated for metric conductor sizes are marked with the letter ??r?? for rigid solid and rigid stranded conductors, or the letter ??f?? for flexible conductors.
Stranded conductor Class ? Connectors rated for use with stranded conductors are for the following strand configurations:
Wire connectors additionally rated for use with other Class conductors,
such as Class M, are marked with the additional class designation and number of strands.
WIRE CONNECTORS AND SOLDERING LUGS (ZMVV)
Wire stranding ? Unless clearly marked ??Solid,?? ??SOL,?? ??Stranded?? or ??STR?? for a given wire size, wire range or wire combination, conductors in the range 30-10 AWG are both solid and stranded, and 8 AWG and largerare for stranded wire only. Connectors additionally rated for metric conductor sizes are marked with the letter ??r?? for rigid solid and rigid stranded conductors, or the letter ??f?? for flexible conductors.
Stranded conductor Class ? Connectors rated for use with stranded conductors are for the following strand configurations:
- Aluminum ? Class B concentric, compressed, and unidirectional lay
compact - Copper ? Class B concentric, Class B compressed, Class C concentric
Wire connectors additionally rated for use with other Class conductors,
such as Class M, are marked with the additional class designation and number of strands.
mdshunk
Senior Member
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- Right here.
I'm not sure that I've ever seen a mechanical lug rated for anything besides concentric, compressed, and compact conductors. When working with stuff like DLO cable, I've always had to use a compression connector. I could never find a lug rated for the fine hairs.
Buck Parrish
Senior Member
- Location
- NC & IN
T's C6 said:
That will definetly cause problems.
cadpoint
Senior Member
- Location
- Durham, NC
You might go cruise over to www.FAA.gov, the rules change if this is a government funded runway verses a barn stormers outback grass runway.
I know that their own rules that are far more then the NEC minimum.
here's some reading on runways lighting Engineering Brief #64A, Runway Status Lights System, Feb. 20, 2007 [PDF]
I know that their own rules that are far more then the NEC minimum.
here's some reading on runways lighting Engineering Brief #64A, Runway Status Lights System, Feb. 20, 2007 [PDF]
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ches2443
Member
- Location
- deal island, maryland
mdshunk said:
Burndy has a section in their catalog for fine hair cables. They are used for extra flex ability. And the lug runs a little larger in the inside dia. then the 12 strand conductor lug.
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