Ampacity Underground

Description

Ampacity Underground by Tom Henry

A new Article in the 2020 NEC
Article 311 – Medium Voltage Conductors and Cables

Article 328 from the 2017 NEC was deleted, and its contents were relocated to a new Article 311, “Medium Voltage Conductors and Cables.” This new article also incorporates requirements for medium voltage cables and conductors rated over 2,000 volts, which were formally located in Article 310.
The scope of Article 310 has been revised and is now limited to not more than 2,000 volts. Requirements and ampacity tables for conductors over 2,000V have been relocated into a new Article 311.
The new Article 311 will include the installation, construction, and ampacities for medium voltage conductors and cable (Type MV). Previously covered in different articles (310 and 328), the information has been combined into one new article.

I feel with the new Article 311, exam questions will start asking about your knowledge of equation. One must first understand how the equation is applied.

310.15(B) Equation

Equation

Improve your understanding of the design, installation and operation of computer data centers, including electrical power, HVAC systems, controls, and computer rack layouts. Learn how to comply with the codes, plan for growth and changing technology, implement test procedures, improve energy efficiency, and coordinate with consultants, contractors, and IT professionals.
Identify the codes and standards that apply to designing data center electrical distribution systems. Data centers are among the hottest developments in the technology world. The growing needs of the Internet of Things have forced the biggest players in the computing world to spend billions of dollars on new multi-megawatt data centers.

Excellent study-aid book for electrical engineering students and teachers of the National Electrical Code. Two exams with answers as a summary.

Click here to see a SAMPLE of the book.