presented by gerry imdieke. we have as much solar energy as florida or houston texas 4.6 hours per...
TRANSCRIPT
PHOTOVOLTAIC SYSTEMS
INSTALLATIONPresented by Gerry Imdieke
3 ft. x 5 ft. panel150 to 200 watts
We have as much solar energy as Florida or Houston Texas
4.6 hours per day Panels produce more when cold
Need for Course
Green is popular We are seeing panels installed in area Mn. Dept. of Labor and Industry ruled PV
panels are electrical equipment that must follow same rules as other wiring.
Who Can Wire Panels in MN?
Licensed electrician working for an electrical contractor
Homeowner wiring own residence Some municipalities might have different rules
Must be wired to code & inspected
Other Concerns
Battery systems – more cost and maintenance
Location critical Snow can be issue
Types of Systems
Stand alone- usually charge battery Great for locations where hard to receive grid
power May have the best payback
Grid connected Tied to grid can sell excess back to utility Power not available during outage
Grid connected with battery backup Have storage and power in outage
Tracking or Nontracking
Tracking – follows the sun 30-40 % more efficient 30-40 % increase in cost
Course Format
One credit 16 hour course Offered as elective to electrical students Installers Homeowners
Two 8 hour modules Module 1 – Wiring requirements Module 2 – Installation, efficiency, payback,
design May be used for cont. ed. Workshops etc. Installers homeoweners
Photovoltaic Systems Installation1 credit
This course covers the installation of photovoltaic (PV) solar panels & equipment. Topics include principals of operation , payback, safety issues, system sizing and placement , with the principal focus being wiring of the units so they are in compliance with the National Electrical Code.
Min. State Community & Technical College (M State)
Required Text: National Electrical Code 2008 Publisher NFPA
Tentative Course Schedule
Lecture 1: Introduction – principles of operation, basic
theory, terminology
Lecture2: Types of Systems – grid connected – stand alone tax credits, rebates, payback
Lecture 3: License requirements – panel sizing NABCEP
Certification Lecture 4: Test Lecture 5: Panel location, mounting systems , snow issues Lecture 6: Additional sources of Information, safety
concerns
Syllbus cont.
Lecture 7: Wiring systems Lecture 8:Test Lecture 9:NEC requirements, Article 690 Lecture 10: NEC requirements - disconnect – conductor sizing Lecture 11: NEC requirements – over current protection Lecture 12: NEC requirements – Temperature derating, conduit fill Lecture 13: NEC requirements – disconnect placement & size Lecture 14: Test Lecture 15: Review Lecture 16: Final
National Electrical Requirements for Solar Panel
Installation8 hours
This course covers the principals of operation, safety issues, and wiring of photovoltaic (PV) solar panels so they are in compliance with the National Electrical Code. Panel, conductor, disconnect, and system sizing will be covered. Article 690 and other relevant articles of the National Electrical Code will be discussed.
National Electrical Code Requirements for Solar Panel Installations
Text: National Electrical Code 2008 edition
Competencies: Describe safety issues Describe principals of operation Calculate conductor size and type Calculate overcurrent protection Describe specifications and placement of
panels & disconnects Size panels, inverters, and batteries Describe grounding requirements
Introduction to Photovoltaic Systems8 hours
This course is an introduction to the different types of photovoltaic (PV) solar panel systems. Topics includes advantages and disadvantages of specific systems, payback, safety issues, installation requirements and principals of operation.
Introduction to Photovoltaic Systems
Text: handouts Competencies: Describe principals of operation Recognize advantages and disadvantages
of different systems Calculate payback Describe factors affecting panel
placement Recognize safety concerns Describe battery types
Web Sites
Southwest Technology Development Institute http://www.nmsu.edu/~tdi
Solar Energy Institute – Design & installation manuals solarenergy.org
Tax credits , panel types-Dsire.org Home Power Magazine
http://www.homepower.com
Payback Factors
Cost of electricity Cost will be going up Systems poor grid access may be good
Installation cost Varies with type of system and placement
Amount of sun exposure Rebates
Tax credits Power Co. rebates
Great River Energy Coops Minn. Power
Cost
8 to 10 dollar per watt installed complete 2KW system $16,000 May have up to $10,000 in rebates and
tax credits 10 year payback at current rates
Without credits 20+ years
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