What table in Article 310 covers ampacity?

As a result, the ampacity tables in Article 310 will simply be titled as Table 310.16 through Table 310.21. As an example, Former Table 310.15(B)(16) will revert to its original numbering and simply be known as Table 310.16.

What is 310 wire used for?

Grade 310 is a medium carbon austenitic stainless steel, for high temperature applications such as furnace parts and heat treatment equipment. It is used at temperatures up to 1150°C in continuous service, and 1035°C in intermittent service.

What uses are permitted for the conductors described in Article 310?

The conductors described in 310.104 shall be permitted for use in any of the wiring methods covered in Chapter 3 and as specified in their respective tables or as permitted elsewhere in this Code. Conductors used for direct-burial applications shall be of a type identified for such use.

What article can you find Ampacities in the NEC?

Some of the requirements previously listed in Article 328 were added to the new Article 311. The Ampacity Table, formerly known as 310.15(B)(16), has been renamed as Table 310.16 through Table 310.21. Ampacity Tables for conductors over 2,000 volts can be found in Article 311.

What size ground wire do I need for a 200 amp service?

What is the difference between 310 and 310S?

Alloy 310 (UNS S31000) is an austenitic stainless steel developed for use in high temperature corrosion resistant applications. 310S (UNS S31008) is the low carbon version of the alloy. It is utilized for ease of fabrication. 310H (UNS S31009) is a high carbon modification developed for enhanced creep resistance.

What is the difference between 310 and 316 stainless steel?

Stainless Steel 310 can be welded using all of the common welding processes. Stainless Steel 316 Flanges are the standard molybdenum-bearing flanges, the molybdenum gives 316 Flanges better overall corrosion resistant properties, particularly higher pitting & crevice corrosion in chloride environments.

What is the maximum voltage rating for conductors covered in Article 310 of the NEC?

Ampacities are noted in the Allowable Ampacities Tables 310.16 through 310.19 and 310.20 through 310.23 for conductors rated 0 to 2000 volts.

Is 500 mcm good for 400 amps?

Racer if the calculated load on the building is 380 amps or less then the 500 cu is still good for a 400 amp breaker.

Who enforces the NEC?

authority having jurisdiction
The enforcement of the NEC is the responsibility of the authority having jurisdiction (AHJ), who is responsible for interpreting requirements, approving equipment and materials, waiving Code requirements, and ensuring equipment is installed in accordance with listing instructions. 100.

What is the most current NEC code?

NFPA 70
NFPA 70, National Electrical Code (NEC) Softbound.

What are the requirements of NEC section 240-3?

NEC Section 240-3 requires the branch circuit, feeder, and service conductors to be protected against overcurrent in accordance with their ampacities as specified in Table 310-16.

When to use Article 310 in electrical wiring?

Article 310 is to be used for general requirements for wiring, but not in areas where it is part of an integral device such as a motor, motor controller, or where covered in another part of the NEC®. 310.2

What do you need to know about NEC Article 410?

This month we will continue the series of articles covering basic electrical inspection items. Article 410 is another example of an article in Chapter 4 of the NEC that often doesn’t get a lot of emphasis from multi-trade inspectors. However, the requirements within this article are important to know and enforce.

What is the National Electrical Code and NEC?

National Electrical Code® and NEC® are registered trademarks of the National Fire Protection Association, Inc., Quincy, MA 02269. ARTICLE 310 – CONDUCTORS FOR GENERAL WIRING 310-1. General. (a) The purpose of this Article is to assure that conductors have mechanical strength, insulation, and ampacity adequate for