Solar panels, solar electric, solar photovoltaic, solar PV

PV Electrical Codes, Time of Use and Inverter Clipping Considerations

Dr. Sean White takes on student questions about National Electrical Code compliance, solar panel Time of Use (TOU) optimization and inverter lifespan. 
Student 1: Why do some AHJ’s (Authority Having Jurisdiction’s) still allow installations under a previous edition of the National Electrical Code? Safety being paramount, is there a time limit for adoption of the latest code?

Dr. Sean White: I […]

Six Drainback Questions for Radiant Heating Pros to Consider

Vaughan Woodruff answers student questions regarding drainback systems on the Solar Approaches to Radiant Heating discussion board…
Student 1: I have several questions on drainback systems for you…

Question #1
When the solar storage tank has satisfied and the system goes into drainback, what happens at the collector? 

Question #2
How hot does the collector get when it is empty?
Does this […]

Dr. Sean White on Microinverters, String Inverters & Optimizers

On the 40 Hour Advanced Solar PV Installer Training Discussion Board…
Dr. Sean White discusses microinverters, string inverters & optimizers

Student 1: I am enjoying the course and I like the way you explain things by citing real world examples. I just want to get your opinion on microinverters. These provide great solutions for power optimization and rapid shutdown, not to mention […]

Solar Sharing Spotlight (or Sunlight?) on Boston’s ‘Yeloha!’

Disruptive technologies like Uber have made car pooling the new norm for transportation, changing the way we travel and the way we think about our vehicles. Crowd sourcing companies like Uber also raise the question: what other existing resources can we ration and distribute amongst ourselves?
Enter Yeloha, Boston’s innovative solar sharing company.

We spoke with Joel Gamoran, Regional Director […]

Solar PV Storm and AC vs. DC Safety Considerations

On the Solar PV Installer Boot Camp Training + NABCEP Entry Level Exam Prep discussion board…
Student 1: Fred, what is the standard for lightning protection systems? The book touches this topic briefly. Is it the norm to have lightning protection? Do you install lightning protection on systems you install? There are many homes in my area in […]