Rapid shutdown was introduced to the National Electrical Code (NEC) in the 2014 edition. Since then, numerous changes have been implemented to clarify the requirements. The 2023...
Since arriving on the market in the 1990s, a broad swath of products often lumped under the category of “lithium-ion batteries” has wriggled its way into much of our world:...
Mt. Hood Town Hall is a community gathering place in the Upper Hood River Valley that acts as a recycling center, community meals distribution hub, middle-school classroom, and a...
In September 2022, Cleanleaf Energy (formerly Borrego) approached Mayfield Renewables with a repower project at Antelope Valley High School in Southern California. Originally...
More PV plants are operational today than at any time in history. Although asset owners view PV systems as “30-year assets,” the system's components will age at different...
Corvallis, OR — Mayfield Renewables has been a leader in consulting engineering and technical education for the solar-plus-storage industry since 2007. We are happy to announce...
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 –...
