Design Concepts of Solar PV System in reference to NEC 690

Name: Design Concepts of Solar PV System in reference to NEC 690
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Understand core concepts of National Electric Code (Article 690) for Solar PV Systems necessary for US and other markets

Created byInnovasys Engineering

Last updated 5/2026

English

What you'll learn

Understand Basic and Core Clauses of National Electric Code (NEC) Articel 690
Understand what are basic Definitions of NEC 690 for Solar Photovoltaic Systems
Understand What are different Methods of calculating Circuit Maximum Voltage
Understand basic concepts and requirements of Maximum Current and Circuit Sizing
Understand what is Rapid Shutdown System and NEC requirements
Understand basic requirements of Over-Current Protection Devices

Course content

2 sections • 16 lectures • 1h 52m total length

Introduction2:09
Explore nec article 690 concepts for solar pv systems, including definitions of interactive and multi‑mode systems, voltage and current calculations, rapid shutdown, and overcurrent protection.
NEC 690.1: Definitions6:16
Explore how NEC 690.7 defines location-based maximum voltages for PV systems and applies temperature adjustments via module coefficients, ambient correction factors, or Sandia method for large installs.
NEC 690.7: Maximum Voltage6:16
Outline NEC 690.7 maximum voltage limits for solar pv by location and temperature-adjusted calculations using module data, ambient tables, or a licensed engineer design.
Bonus Lecture: Calculating Voltages - Theory and Examples17:08
Explore how temperature affects a crystalline silicon PV module, focusing on voltage, current, and power. Learn to calculate open-circuit voltage changes using temperature coefficients, STC data, and NEC correction factors.
NEC 690.8: Maximum Current and Circuit Sizing10:53
Determine the maximum circuit current for a PV array per NEC 690.8 using short-circuit current and inverter input limits. Size cables and protective devices with adjustment factors and tables.
NEC 690.12: Rapid Shutdown System4:34
NEC 690.9: Over-Current Protection8:37

NEC requirement for PV Modules3:29
Understanding the importance of ASHRAE in design of Solar PV Systems3:56
ASHRAE climate data informs solar PV design by providing ambient temperature and wind speed used in PV calculations.
Understanding requirements of MC4 connectors2:59
Understanding requirement of a stand-alone PV system without Charge Controller4:50
Learn about a stand-alone PV system wired directly to a battery bank without a charge controller or inverter, requiring voltage matching and NEC 690.72's 3% one-hour charging cap.
Requirements of terminals of PV Module2:38
Learn how PV modules must mark terminals with polarity and key ratings—open circuit voltage, operating voltage and current, short circuit current, and maximum power—on the back of the module.
Understanding PV Wire or cable for a PV Module2:55
Explain which cable types qualify as PV wire for a PV module, emphasizing AC-2 and PV wire listings, with US-2 as the correct option. The answer is option B, US-2.
What is PV Cable5:34
Identify how PV cables interconnect PV modules and connect strings to the inverter, and distinguish DC grounding from PV wire.
Calculating minimum No. of PV Modules for a system8:22
Compute the minimum number of pv modules in series to meet a 75 v inverter input at 70 °C, using a -0.35%/°C vmp from a 41 v module; eight modules.
Calculating Maximum No. of PV Modules for a System21:25
Calculate the maximum number of PV modules in series for a residential system by adjusting open-circuit voltage for temperature, using a 600‑V limit, yielding 13 modules.

Requirements

Basics of Solar Photovoltaics

Description

* This Course is systematically and ingeniously designed by a team lead by NABCEP PVIP Certified Processional to help you quickly grasp Essential and Must Learn Basic Concepts of NEC 690 for Solar Photovoltaic Systems, which is rarely found in other similar courses. This course will also help you to pass industry certifications like NABCEP Associate or advance Exam. Course includes advance Calculations which would also be helpful in preparing for advanced Certifications.

* See other Courses offered by the same Instructor at affordable Prices

1) This Course shall introduce you basic and core concepts of National Electric Code which are necessary to implement in US, or, in either case you are working in any market of the world. Code like NFPA70 or National Electric Code (NEC) helps to design the systems safe and safeguard human and other property.

2) If you are interested to learn designing of Solar PV systems than understanding Article NEC 690 is mandatory to bring your knowledge at par with international and professional level .

3) Understanding Codes and Standards is a necessary step in learning. This course shall kick-start your understanding about very popular and mostly used National Electric Code world-over.

Course Contents (TOC)

1) NEC 690.1: Definitions:

Interactive System, Multimode System, DC or AC Coupled Multimode System

2) NEC 690.7: Understanding maximum Voltage in a Solar PV System:

Two Methods of Maximum Voltage

3) NEC 690.8: Understanding concepts of Maximum Current and Circuit Sizing

Two Methods of Conductor Sizing

4) NEC 690.12: Understanding the concept and requirements of Rapid Shutdown System

Rapid Shutdown System is required to safeguard the human property

5) NEC 690.9: Understanding core concepts of Over-Current Protection

Where Over-Current Protection Device (OCPD) is required or not required

Who this course is for:

Beginners and Professionals in the field of Solar Photovoltaics looking to understand basics of National Electric Code

Design Concepts of Solar PV System in reference to NEC 690

What you'll learn

Explore related topics

Course content

NEC 6907 lectures • 56min

Bonus Lectures: Questions9 lectures • 56min

Requirements

Description

Who this course is for: