UL 4248-19:2021 free download

UL 4248-19:2021 free download Fuseholders – Part 19: Photovoltaic Fuseholders
1 Scope
1.1 This Part is intended to be read together with the Standard for Fuseholders – Part 1: General Requirements, hereafter referred to as Part 1. The titles of the Clauses in this Part correspond to the similarly titled Clauses in Part 1. The requirements of Part 1 apply unless modified by this Part. For the Part 1 requirements, refer to the Standard for Fuseholders – Part 1: General Requirements, NMX-J-009- 4248/1-ANCE / CSA C22.2 No. 4248.1 / UL 4248-1.
1.2 This Part applies to Fuseholders for Photovoltaic (PV) Systems rated to 1500 Vdc. 1.3 This Part applies to PV fuseholders that accommodate PV fuses as described in the Standard for Low-Voltage Fuses – Part 19: Photovoltaic Fuses, NMX-J-009/248/19-ANCE / CSA C22.2 No. 248.19 / UL 248-19 to be employed in Photovoltaic (PV) systems and that are intended to be used in accordance with the Canadian Electrical Code, Part I, CSA C22.1, the National Electrical Code, NFPA 70, and the Mexican Electrical Code, NOM-001.
1.4 Fuseholders that meet another Part also need to comply with those requirements of that Part.
2 Referenced Publications
2.1 Any undated reference to a code or standard appearing in the requirements of this Standard shall be interpreted as referring to the latest edition of that code or standard.
2.2 When a reference is made to a code or standard, the product shall comply with the code or standard of the country in which the product is intended to be used.
2.3 Throughout this Standard, the CSA standard references apply to products intended for use in Canada, the ANCE NMX standard references apply to products intended for use in Mexico, and the UL standard references apply to products intended for use in the United States. Combined references are separated by a slash (“ / ”) to denote the difference between the applicable requirements specified for use in Canada, Mexico, and the United States.
3 Units of Measurement
3.1 The values given in SI (metric) shall be normative. Any other values given shall be for information purposes only.
4 General
4.1 In Canada, general requirements applicable to this Standard are given in CSA C22.2 No. 0, General Requirements – Canadian Electrical Code, Part II.
5 Classification
5.1 Fuseholders for use with photovoltaic (PV) fuses shall have a minimum short-circuit withstand rating of 10 kA and shall be rated 1500 Vdc maximum.
6 Ratings
6.1 Fuseholders for use with photovoltaic (PV) fuses may be rated 1500 Vdc maximum, and the preferred ratings are 600 V, 750 V, 1000 V, 1250 V, and 1500 V.
6.2 Fuseholders for use with photovoltaic (PV) fuses shall have a minimum short-circuit withstand rating of 10 kA.
7 Markings
7.1 Fuseholders for use with photovoltaic (PV) fuses shall be marked in accordance with Part 1.
In the United States and Mexico, the French markings are not required.
In Canada and the United States, the Spanish markings are not required.
7.2 The information on a fuseholder shall be legible and include the following:
a) “Use Photovoltaic (PV) Fuses” or equivalent and « Utiliser des fusibles photovoltaïques » or the equivalent and “Utilizar fusibles fotovoltaicos (PV)” or equivalent;