Mandatory NEC 2011 Compliance
Section 690.11 of ANSI/NFPA 70®, National Electrical Code® 2011 Edition (2011 NEC) sets new requirements for photovoltaic (PV) systems installed on or penetrating a building. These requirements apply to newly installed PV systems with a maximum voltage of 80 volts or greater. Such PV systems must be equipped with direct current (DC) arc-fault circuit protection.
DC arc-fault circuit protection provides supplementary protection against fires that may arise as a result of arcing faults in PV system components or wiring.
SMA Sunny Boy US inverters are now available with integrated Arc Fault Circuit Interrupter (AFCI) functionality. Integrating AFCI functionality within the PV system inverter eliminates the cost and effort of installing additional arc-fault circuit protection components.
SMA understands that commercial projects can be risky. Passing inspections the first time can help a project stay on-time and on-budget, reducing some of the investment risk. That's why the Sunny Tripower TL-US features integrated AFCI, ensuring that NEC 2011 AFCI code compliance is met.