Electrical
1.1 General
The test method in this Standard determines the wind pressure resistance of photovoltaic roof assembly when subjected to dynamic wind loading cycles induced by actuators in laboratory conditions.
1.2 Inclusions
This Standard applies to photovoltaic arrays with tilt angle no greater than 35o from roof surface, constructed on partially attached (hybrid) or adhesive applied membrane-roofing system (PARS and AARS).
1.3 Exclusions
This Standard is not applicable to photovoltaic arrays constructed on mechanically attached membrane roofing systems (MARS), vegetated roof assemblies (VRA), protected membrane roofs or loose-laid membrane roofing systems.
1.4 Terminology
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard.
1.5 Units of measure
The values given in SI (metric) units are the standard. The values given in parentheses are for information only
Note: Accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Note: Tables and figures are considered part of the table or figure and may be written as requirements.
Note: Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
1.1
These requirements cover liquid-tight flexible nonmetallic conduit in the 3/8 – 4 (12 – 103) trade sizes of Type LFNC-A (Layered), Type LFNC-B (Integral), and Type LFNC-C (Corrugated) constructions. The conduit is intended for installation in accordance with the National Electrical Code (NEC), the CE Code, Part 1, and the Mexican Electrical Code, NOM-001-SEDE. The values in parentheses are metric trade designators of conduit.
1.2
Conduit covered by this Standard is intended for use in wet, dry, or oily locations at a maximum of 60°C (140°F), unless otherwise marked. (See Section 6.)
1.3
Fittings for liquid-tight flexible nonmetallic conduit are covered in UL 514B, CSA C22.2 No. 18.3, or NMX-J-017-ANCE.