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1.What is the purpose of PV system? 2.What will be the size of the system? 3.What components will you be using? 4.How will the system be interconnected with the grid? 5.What is the budget? 6.Major design parameters (roof? ground? tracking?) NEC calculations mostly done AFTER these big decisions on design are already made Before doing any calculations, review these “Big Picture” Considerations
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NEC Part 2: CalculationsLesson 522.525
Big picture design considerations Purpose of these calculations1. Max system voltage2. dc calculations
a. max voltage and currentb. conductor sizing (ampacity)c. overcurrent device sizingd. voltage drope. Conduit sizing
3. ac calculations
Overview
1. What is the purpose of PV system?2. What will be the size of the system?3. What components will you be using? 4. How will the system be interconnected with the
grid?5. What is the budget?6. Major design parameters (roof? ground?
tracking?)
NEC calculations mostly done AFTER these big decisions on design are already made
Before doing any calculations, review these “Big Picture” Considerations
Get you “into the weeds” in PV system design
Familiarize you with terminology, locations of important tables in the NEC
Go to word document: NEC Calculation Notes ver 3
Purpose of these Calculations
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