Ac-coupled Systems
From HeatSpring.com PV Boot Camp Discussion Board Q: Sean: This is a great class and thank you! Your lecture suggested that ac coupled...
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Mar 24, 20162 min read
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Dc to ac ratio (PV to inverter ratio)
From HeatSpring.com PV Boot Camp Discussion Board Q: I am having a hard time figuring out the math for DC to AC size ratio. Maybe your...
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Mar 23, 20164 min read
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Educational Enthusiasm
From HeatSpring.com PV Boot Camp Discussion Board Q: Happy to be able to help, your educational enthusiasm is contagious. By the way I...
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Mar 23, 20161 min read
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Fast changing state of PV technology
From HeatSpring.com PV Boot Camp Discussion Board Q: This was a very interesting section for me, especially since I am unfamiliar with a...
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Mar 21, 20161 min read
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690.31(G) Dc PV Source and Output Circuits on or in a building
From HeatSpring.com PV Boot Camp Discussion Board Q: thanks for the great info and pictures, and just to clarify all our dc into building...
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Mar 21, 20161 min read
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National Permitting Process
From HeatSpring.com Adv. PV Class Q: Hi Sean, Big picture here, in efforts to help deploy more solar in the residential market, do you...
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Mar 21, 20161 min read
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Delta Kelvin is the same as delta Celsius
From HeatSpring.com NABCEP PV Technical Sales Exam Prep Study Group Q: Oh and I was reminded today that mV/C(elsius) and mV/K(elvin) are...
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Mar 21, 20161 min read
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PV Temperature coeficcients in V/C, mV/C and %/C with conversion examples
From HeatSpring.com NABCEP PV Technical Sales Exam Prep Study Group Q: One thing I remember from working on temperature co-efficients...
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Mar 19, 20161 min read
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Polycrystalline, Multicrystalline, Monocrystalline, CdTe, CIGS and Gallium Arsenide
From HeatSpring.com NABCEP PV Technical Sales Exam Prep Study Group Q: How much time is it worth to spend on the various types of cells...
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Mar 19, 20162 min read
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705.12(D)(2)(2) and 240.21(B) 10-foot Tap Rule and 25-foot Tap Rule for PV Systems
From HeatSpring.com NABCEP PV Technical Sales Exam Prep Study Group Q: I'm not super clear on the 10 ft. and 25ft. tap rules. Can you...
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Mar 19, 20162 min read
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Voltage Drop and Bypass Diode Alternatives
From HeatSpring.com NABCEP PV Technical Sales Exam Prep Study Group Q: Ch 3 Question: Will we be asked to calculate voltage drop on the...
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Mar 19, 20164 min read
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690.11 dc Arc Fault Protection and 690.12 Rapid Shutdown of PV Systems
From HeatSpring.com NABCEP PV Technical Sales Exam Prep Study Group Q: I've been reading recently about 2014 requirements for arc fault...
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Mar 19, 20162 min read
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Pole Mounts, more energy and other benefits
From HeatSpring.com PV Boot Camp Discussion Board Q: In Liberia the subject on temperature and radiance effects on voltage and current is...
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Mar 18, 20161 min read
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Stringing batteries for PV Systems in Africa
From HeatSpring.com PV Boot Camp Discussion Board Q: When I size batteries for systems in Liberia, I always double the quantity of the...
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Mar 18, 20161 min read
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Batteries-All the Rage and Nevada killing Net-Metering comments
From HeatSpring.com PV Boot Camp Discussion Board Q: I am very impressed at how fast the technology within the solar industry has...
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Mar 18, 20161 min read
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Why low PV System Voltages in the 1990s
From HeatSpring.com PV Boot Camp Discussion Board Q: Why were residential systems in the 1990s at such low voltages? Was this due to low...
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Mar 18, 20162 min read
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Ac-coupled PV system evolution and multimodal inverters
From HeatSpring.com PV Boot Camp Discussion Board Q: The textbook considers 'AC coupled systems' within the category of Off-grid systems....
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Mar 18, 20163 min read
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Snow on the PV Array
From HeatSpring.com PV Boot Camp Discussion Board Q: I have been trying to find a chart that alows us to take into consideration snow...
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Mar 17, 20162 min read
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Voltage Drop and Ohm's Law
From HeatSpring.com PV Boot Camp Discussion Board Q: I understand that resistance is a constant since it is tied to a material's...
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Mar 17, 20161 min read
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Expansion Joints, Metal Raceways and PV
From HeatSpring.com Adv. PV Class Q: Hi Doc, here in Indiana land we mostly use schedule 40 conduit and armored cable and flexi steel...
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Mar 16, 20162 min read
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