This Outline of Investigation applies to Fuses for Photovoltaic Systems rated up to 1500 V dc. Fuses for Photovoltaic Systems are intended to be used for the protection of strings or arrays of Photovoltaic cells and their associated wiring to provide protection against overloads or low-level short circuits. These types of fuses are not intended to protect downstream inverter components@ such as capacitors or the discharge of such capacitors back into the arrays or the array wiring above the fuse interrupting rating. General Note: This Outline of Investigation is intended to be read together with the Standard for Low-Voltage Fuses - Part 1: General Requirements@ UL 248-1@ hereafter referred to as UL 248-1. The numbering of the Clauses in this Outline of Investigation corresponds to like numbered Clauses in UL 248-1. The requirements of UL 248-1 apply unless modified by this Outline of Investigation.