25kW, 1000VDC, 208VAC Transformerless String Inverter. SOLAR INVERTERS Yaskawa Solectria Solar’s PVI 25TL is a compact grid-tied, transformerless three-phase string inverter ideal for rooftop, ground mount and carport PV arrays. The PVI 25TL inverter comes standard with AC and DC disconnects, three MPPTs, a six-position fused wiring box with fusing only for the positive conductors (NEC 2017), remote diagnostics, remote firmware upgrades and various protection features. OPEN BOX, but NEVER ENERGIZED. Wiring box including with each inverter.