Solar PVSD

Solar PV System design


Take a deep dive into National Electrical Code standards as well as other best practices that pertain to designing safe and efficient grid-direct PV systems. This course focuses on residential and commercial-scale systems, but the Code requirements, design parameters, and best practices are applicable to all types and sizes of PV installations, including utility-scale. Detailed lessons address requirements for disconnects, overcurrent protection, and cable sizing; interconnection requirements and calculations; grounding, ground-faults, and surge protection; calculations for system sizing, inverter selection, and electrical configuration; ground and roof mount details; and commissioning and performance analysis procedures.  (Prerequisite class required)


Students who complete the Solar Systems Design course will be able to:

  • Define the purpose of the Nigerian Electricity Regulatory Commission (NERC) and the Power Holding Company of Nigeria. (PHCN)
  • Determine procedures for proper installation of equipment and conductors, including minimum requirements for working space
  • Examine methods for PV wire management and determine where expansion fittings are required
  • Describe and identify electrical services.
  • Evaluate electrical service details to collect and record during solar site evaluation
  • Identify options for NERC®-compliant PV system interconnection to the utility grid and determine whether a supply side, load side, or additional service connection is appropriate
  • Identify code-compliant methods for connecting an inverter to an existing AC feeder
  • Identify NERC® requirements and sizing of disconnects and overcurrent protection devices (OCPDs).
  • Define inverter grounding configurations
  • Evaluate inverter choices and system configurations, including string inverters, central inverters, and module level power electronics (MLPE)
  • Identify requirements for equipment grounding, equipment grounding conductors (EGC), and grounding electrode conductors (GEC), and size the conductors according to the NERC®
  • Identify common causes of ground-faults and arc-faults
  • Describe ground-fault and arc-fault protection devices
  • Describe benefits and appropriate locations of surge protection devices (SPD)
  • Demonstrate the use of sun charts and perform calculations to determine row spacing and minimize inter-row shading
  • Examine fire classifications that affect racking and module selection
  • Detail NEC rapid shutdown requirements
  • Identify load and structural considerations for low- and steep-slope roof-mounted PV systems
  • Calculate wind uplift force and select appropriate lag bolts
  • Review issues related to planning, design, and installation of ground-mount PV arrays
  • Review PV system circuit terminology, definitions, and conductor types
  • Calculate minimum overcurrent protection device (OCPD) size and conductor ampacity using appropriate adjustment and correction factors
  • Calculate voltage drop and verify system operation within acceptable limits
  • Examine requirements for PV system labeling
  • Calculate the maximum and minimum number of modules per PV source circuit, and number of PV source circuits per inverter
  • Determine size of residential grid-direct PV system based on site and customer-specific considerations including the number and wiring layout of modules, conductor and OCPD sizes, and the AC interconnections
  • Determine the size of a large, multiple inverter, grid-direct PV system based on site and customer-specific considerations, including the quantity and layout of modules and inverters and the AC interconnection
  • Define large-scale PV and review associated NERC® allowances and requirements
  • Identify safe methods for, and electrical hazards associated with, commissioning a PV system
  • Review personal protective equipment (PPE), lockout tagout methods (LOTO), and safe meter use and testing
  • Define performance verification and estimate expected voltage, current, and power based on system configuration and environmental conditions
  • Mr. Muyiwa Okediran (ASREA Lead Instructor)
  • Mr. Habeeb Olaide
  • Engr. Hezekiah Adeniyi (Head of Technical Department)
  • Mr. Segun Olofinsawe

Before participating in the Solar PV System design course, students MUST complete Solar PV Installation , an equivalent course from another organization, have NAPTIN certification, or demonstrate field experience

Duration 1 Week
ELIGIBILITY: Solar PV Installation
COURSE FEE: N 80,000.00
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