What is UL, and what standard UL certifications do Victron inverter/chargers hold?
UL stands for Underwriters Laboratories, a safety science company that operates the largest independent testing facility in the United States. Many residential applications require UL certification for code compliance. Victron Energy's UL-certified inverters currently fall under two certification codes: UL458 and UL1741. UL458 applies to mobile applications where selling power back to the grid isn't possible.
For US residential customers, UL1741 is most relevant. It certifies that the neutral-to-ground bond can only occur on the main AC panel when grid power is connected. UL1741 also certifies the inverter's battery charging function. In grid-connected homes where power exporting may be a factor, UL1741 certification is an important step in ensuring a power system is compliant.
Why aren’t all Victron products UL Certified?
Due to differences in voltage and certification standards, Victron has taken a two-step approach to entering the market. First, they produced 120V models. Now, they're working on obtaining UL certification to ensure their product lines comply with regulations for residential grid-tied homes.
For Victron, obtaining UL Certification is an additional, U.S. market-specific step beyond the numerous global standards they already meet. This process is both lengthy and costly, but progress is steadily being made. We're excited about the recent certification of the Quattro 48/10000 and the pending certification of the MultiPlus II 48/5000.
Are more UL-certified inverter/chargers in development?
Victron plans to develop more US-specific, fully certified solutions. They're working on a split-phase 8kW inverter for those who need it. A 2x120V in 48V option is also in development. All these products will be UL certified.
With the growing demand for high-quality home backup systems, Victron's grid-interactive solutions are already ahead of the curve. For installers requiring UL certification and seeking an impressive range of features and quality, Victron is the go-to choice.
Related Reading:
>>> Victron Energy Inverter/Charger Buyer Checklist
>>> Bad, Better, Best: Battery-Inverter Communications & Compatibility
