Tag: September/October 2019

PV Installations for the 2020 NEC

PV Installations for the 2020 NEC

Let’s take a look at some of the more significant changes ...

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Inspector holding a copy of the Canadian Electrical Code

Common Misconceptions Related to the Design, Installation, and Use of Electrical Equipment

This feedback demonstrates that there are plenty of misconceptions among the ...

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Sample calculations for PV Systems

PV Systems Math — Sample Calculations

Looking at the PV array in a PV system, many installers ...

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UL Question Corner Type EF

UL Question Corner — PV rapid shutdown inside the array, and is Type EF conduit Listed?

Are there any Certified (Listed) products available to meet new PV ...

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Code Hunter

Code Hunter — Solar PV, NEC-2017

Take this quiz on solar photovoltaic requirements in the 2017 National ...

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Questions from the field

Questions From the Field

I am having trouble interpreting Section 705.12(D)(3) [NEC 2011] and the ...

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Calculator and pad for voltage drop calculations

Voltage Drop Calculations

These voltage drop formulas are based on conductor DC resistance values ...

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Solar PV Wiring Methods — Lessons Learned from the Test of Time

Solar PV Wiring Methods — Lessons Learned from the Test of Time

By now, we’ve all had the opportunity to experience a PV ...

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Aging Gracefully: Aging PV Installations

Aging Gracefully: Best practices for long life PV installations

For many years, photovoltaic (PV) plants were designed to a 20-year ...

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