Show Floor Education Schedule

Tuesday, March 19, 2019

Time Event
1:00 pm – 2:30 pm
Conductor and OCPD Sizing

Intermediate Level

Sizing conductors and overcurrent protection devices correctly is one of the most important steps for electrical safety. There are many factors that must be considered for conductor sizing such as conduit fill, ambient temperature, sun exposure and temperature rating of the terminals to which the conductors will be connected. In this 1.5 hour lesson we will review NEC requirements for conductor sizing, navigating multiple sections of the Code, and describing a step by step for procedure for correct conductor and OCPD sizing in PV system circuits.

Speakers: Karo Fernandez, Curriculum Developer and Technical Instruction, Solar Energy International

3:00 pm – 4:00 pm
PV System Types and Components

Basic Level

Conference Area 1

For those new to the solar industry, this is a great training to jump in with. This brief training will provide you with an overview of the different types of PV systems and component configuration options. Learn to identify and describe the basic functions of the different components in a PV system. You can confidently walk the showfloor and know what you are looking at after you have taken this brief training.

Speakers:
Karo Fernandez, Curriculum Developer and Technical Instruction, Solar Energy International

4:30 pm – 5:30 pm
Installation Requirements and the NEC

Basic Level

Workshop Area

This training will cover the fundamentals of solar site analysis, covering the most important questions that need to get answered during a first site visit, and analyzing the solar resource available. This information is important to estimate how much PV can be installed in a site, and how much energy that PV array can produce. We will define what to observe, from the structural integrity of the roof and available roof disposition, to the existing electrical distribution panel. We will also explore the various site and shading analysis tools needed to accurately estimate how much energy a PV array will produce based on orientation, tilt angle, and other site characteristics.

Speakers:

Karo Fernandez, Curriculum Developer and Technical Instruction, Solar Energy International

Wednesday, March 20, 2019

Time Event
1:00 pm – 2:30 pm
Site Analysis for PV Systems

Level: Basic

Conference Area 1

This training will cover the fundamentals of solar site analysis, covering the most important questions that need to get answered during a first site visit, and analyzing the solar resource available. This information is important to estimate how much PV can be installed in a site, and how much energy that PV array can produce. We will define what to observe, from the structural integrity of the roof and available roof disposition, to the existing electrical distribution panel. We will also explore the various site and shading analysis tools needed to accurately estimate how much energy a PV array will produce based on orientation, tilt angle, and other site characteristics.

Speakers: Karo Fernandez, Curriculum Developer and Technical Instruction, Solar Energy International

3:00 pm – 4:00 pm
Inverter Types, Topologies and Selection Considerations

Intermediate Level

Workshop Area

Interactive PV systems require inverters to change the DC power from the PV array to AC power, and to synchronize it with the voltage and frequency of the power grid. Learn what is commercially available in the market, including inverter topologies and configuration options. You will learn topics from differentiation between functionally and solidly grounded systems to considerations for choosing components such as microinverters, DC-DC converters or string inverters and central inverters. Every inverter has advantages, limitations, design considerations and types and sizes of systems for which it is most appropriate, and in this lesson we will review details that a designer must consider to choose wisely.

Speakers:

Karo Fernandez, Curriculum Developer and Technical Instruction, Solar Energy International

4:30 pm – 5:30 pm
Ground Faults and Ground Fault Protection

Advanced Level

Workshop Area

Ground faults are relatively common and can be dangerous and difficult to solve. Interactive PV systems must comply with certain DC and AC equipment grounding requirements for correct operation of ground fault protection devices. In this lesson, we will first review terminology and configuration of equipment grounding in PV systems, including requirements and options for ground fault protection. We will analyze ground faults in PV systems, with special attention to ground fault blind spots in interactive PV systems with transformerless inverters, and how to retrofit technology for risk reduction.

Speakers:

Karo Fernandez, Curriculum Developer and Technical Instruction, Solar Energy International

Thursday, March 21, 2019

Time Event
1:00 pm – 2:30 pm
OCPDs and Disconnects: Which, Where, and Why

Intermediate Level

Workshop Area

The requirements for disconnects and overcurrent protection in PV systems can be complex. Knowing when and where a disconnect is sufficient—or whether an overcurrent protection device (OCPD) is required—is crucial both for system safety and performance. For the NEC 2017 cycle revision a group of subject matter experts delved into updating and rewriting the code sections pertinent to this subject, giving them more clarity of intention and definition. Learn what these changes are, and what are the updated requirements for means of disconnects and OCPDs, and get a head start on what may be in the next revision of Mexico´s NOM-001-SEDE-2018.

Speakers:

Karo Fernandez, Solar Energy International

3:00 pm – 4:00 pm
Source Circuit Sizing for String Inverters

Intermediate Level

Workshop Area

Designing a PV system is more than just stating how many modules and what size inverter to use; there´s analysis behind determining how many modules and what configuration of a particular module can be connected to a specific inverter, base on local site conditions. Although there are tools from inverter manufacturers that do string sizing for you, a good PV designer must be able to perform the calculations to review and optimize the configuration options. In this lesson we study the complete procedure for sizing PV source circuits and understand the ins and outs of decision making that a design software cannot do for you.

Speakers:

Karo Fernandez, Solar Energy International