My first 'actual' rodeo was in 1984, the same year Article 690, PV Systems, first appeared in the National Electrical Code (NEC).
The 2026 version of the NEC marks my first...
Tyson Bittrich
11.18.2024
Proper wire sizing is fundamental when designing and installing a PV system. The National Electrical Code (NEC) stipulates guidelines on wire sizing that, if complied with, can...
Megohm or insulation resistance tests validate the insulating properties of electrical conductors. A conductor with “good” insulation will have high insulation resistance –...
The term voltage drop refers to the reduction of voltage between components in a circuit. Voltage drop is used to determine conductor size and length, as well as the spacing...
The study of a lithium-ion battery (LIB) system safety risks often centers on fire potential as the paramount concern, yet the benchmark testing method of the day, UL 9540A, is...
There may be numerous reasons for including a transformer in a design set. Maybe you are simply stepping PV voltage down to service voltage in a behind-the-meter context. Maybe...
Laurel Hamilton
8.15.2024
Corvallis, OR — Mayfield Renewables has been providing leading consulting engineering and technical education in the solar-plus-storage industry since 2007. We are happy to...
In this installment of our Code Corner series, Ryan Mayfield focuses on the 2023 National Electrical Code (NEC) changes concerning cable trays, particularly section 690.31...
Imagine, for a moment, what the grid of the not-too-distant future looks like. Should current trends continue, you’ll likely notice more electric vehicles gliding silently...
