How to Calculate Wire Size & NEC 690.8 (B)

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 help keep your projects operating more safely and efficiently. The entire journey for proper wire sizing and coordination with even a basic NEC-compliant solar PV design is a […]

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Insulation Resistance Testing Explained

Megohm or insulation resistance tests validate the insulating properties of electrical conductors. A conductor with “good” insulation will have high insulation resistance – often measured in gigaohms, GΩ. A conductor with “bad” insulation will have lower insulation resistance, which can create a pathway for leakage current.  No insulation is perfect, but the goal of the […]

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