First Solar FS-380 User Manual page 10

FS Series 3 PV Module User Guide—North America | Page 8 of 13
Per the requirements of UL 1703, a module with exposed conductive parts is considered to be in compliance with UL 1703
only when it is electrically grounded in accordance with the instructions presented and the requirements of the National
Electrical Code.
First Solar FS Series 3 PV Modules have no exposed conductive surfaces and do not require equipment grounding as long as
a clip length of 100mm for a standard 4 clip mounting is not exceeded. In the U.S., the mounting structure must be grounded
per the requirements of the NEC, sections 250 and 690.
First Solar recommends negative pole DC electrical system grounding for large utility scale systems.
4.3.2 Overcurrent Protection
FS Series 3 modules have a maximum series fuse rating of 3.5A as defined by UL 1703 test methods.
FS Series 3 modules have a maximum overcurrent protection rating of 3.5A as defined by IEC 61730 test methods.
PV systems should be designed to comply with and provide module overcurrent protection consistent with local codes as
appropriate for the intended application class of the system.
Please refer to FS Application Note PD-5-308 for additional information on module overcurrent protection.
PD-5-200-03 NA | REV 2.1 | 02771_UG_NA_24OCT12