What are some of the requirements covered by Article 310?
As indicated by the scope of Article 310, this article covers general requirements for conductors rated up to and including 2000 volts and their type designations, insulations, markings, mechanical strengths, ampacity ratings, and uses. This article on conductors has been a part of the Code since the 1947 NEC.
When installed in raceways single insulated conductors shall be stranded when size or larger is installed?
Where installed in raceways, conductors 8 AWG and larger shall be stranded, unless specifically permitted or required elsewhere in this Code to be solid.
What is the minimum size of aluminum conductor cable that can be used for wiring of power circuit?
The minimum size of conductor used in domestic wiring must not be of a size less than 1/1.12 mm in copper or 1/1.40 mm (1.5 mm) in the aluminum wire.
What section of the code covers small conductor?
Section 200-6(a) covers No. 6 and smaller grounded conductors. These smaller conductors must be identified along the conductor’s entire length.
What size wire do I need for 400 amps?
400 amp. 400 amp service requires an aluminum wire size of 1000 kcmil. In contrast, a copper 600 kcmil can handle that amount of power.
Where raceways contain or larger insulated circuit conductors?
For example, where raceways contain 4 AWG or larger insulated circuit conductors, and these conductors enter a cabinet, a box, an enclosure or a raceway, the conductors shall be protected by an identified fitting that provides a smoothly rounded insulating surface, unless the conductors are separated from the fitting …
Where installed in raceways conductors and larger not specifically permitted or required elsewhere in the NEC to be solid are required to be stranded?
8 AWG
You are correct, NEC 310.106(C) requires that where installed in raceways, conductors 8 AWG or larger, not specifically permitted or required elsewhere in the Code to be solid, must be stranded .
What is the largest size fuse permitted for a 14 gauge wire?
If this circuit is constructed with 14 gauge wire, the maximum allowed amperage rating of 15 amps would be exceeded, causing the fuse to blow.
What is the minimum size of conductor for a 20 amp branch circuit size?
12 AWG
Because the rating of the breaker is 20A, the minimum size conductor is 12 AWG (see Figure 1). In accordance with 424.3(A), individual branch circuits shall be permitted to supply any volt-ampere or wattage rating of fixed electric space-heating equipment for which they are rated.
What does the letter R stand for with regard to insulation coding?
XHHW wiring. control and communications wiring. What does the letter R stand for with regard to insulation coding? Rubber. When conductors are installed where the ambient temperature is above _______________ the conductor ampacity must be reduced proportionally with the increase in temperature.
Can I re identify white conductors?
The white conductor within a cable can be used for the ungrounded conductor, if permanently re-identified by marking tape, painting, or other effective means at each location where the conductor is visible to indicate its use as an ungrounded conductor.