Connect the positive lead of the multimeter to the positive terminal or wire of the solar panel. In the rapidly evolving solar industry, the shift from 1000V to 1500V DC systems has become the new standard for utility-scale projects. While this increases efficiency, it creates a dangerous gap in the toolkits of many technicians. Whether you're working with a utility-scale solar photovoltaic (PV) array, wind power, an electric railway, or a data center, the Fluke 283 FC has been. 🔋 Maximize the safety and performance of your solar PV system with the PV-ISOTEST 1500VDC insulation meter! Designed to meet IEC/EN62446 standards, this professional-grade tool allows for accurate insulation resistance testing, ground fault localization, and PV system verification.