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The process of investigation after an inspected rooftop PV system catches...

A fire occurred on the roof of a house that had a photovoltaic (PV) system installed on that roof and the PV system was...

Overcurrent Protection and Disco Oddities

The two previous articles in this series covered how currents are developed and handled in PV systems and how the ampacity of conductors is...

Dealing with Currents in PV Systems — Just a little more...

In the previous article in this series, we saw how the voltages from PV modules are affected by the environment and how the National...

Solar Farms – School of Hard Knocks

If you have read my November/December 2016 article in IAEI Magazine regarding the hard lessons learned by some of the large solar contractors, you...

Ensuring the Safety of the Public: The Process of Inspecting PV...

The complexity of photovoltaic (PV) power systems dictates a careful and thorough inspection, starting with a detailed permit application and a plan review of...

Ensuring the Safety of the Public: The process of inspecting PV...

While large, utility-scale photovoltaic (PV) power systems account for more of the installed megawatts and gigawatts of PV power in the United States, the...

Article 705.12(A) — Point of Connection Supply Side Connections

I still remember the day when a fellow inspector tapped me on the shoulder and said: “Be ready to leave in 20 minutes; we’re...

SLEEKER, CLEARER, MORE UNDERSTANDABLE PV IN THE 2017 NEC — Part...

This article will continue our review of the significant changes in the 2017 NEC that relate to photovoltaic (PV) power systems. In the November-December...

Adventures in Inspecting Large Scale PV

If you were inspecting PV systems before publication of the 2008 NEC, you may have seen some interesting DC combiners (see photos 2 through...

Hot Topics for PV System Installations

With most of the United States now on the 2014 or 2017 National Electrical Code (NEC) several topics and enforcement questions are routinely being...
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