UL 2556:2021 pdf download.STANDARD FOR SAFETY-Wire and Cable Test Methods.
1.1 UL 2556 describes the apparatus, test methods, and formulas to be used in carrying out the tests and calculations required by wire and cable standards.
1.2 Specific acceptance requirements are found in individual product standards.
1.3 Where a test method indicates a “specified” test parameter or condition, the parameter or condition is found in the individual product standard.
2 General
2.1 Units of measure
The unit of measure shall be SI. If a value for measurement is followed by a value in other units in parentheses, the second value represents a direct conversion or an alternative value. Except for conductor size, the first stated value is the requirement.
2.2 Normative references
Where reference is made to any Standards, such reference shall be considered to refer to the latest editions and revisions thereto available at the time of printing, unless otherwise specified.
ANCE (Association of Standardization and Certification)
In Mexico, NMX-J-556-ANCE is organized with the same clause numbering as UL 2556/CSA C22.2 No. 2556. Separate ANCE standards are published for test methods not covered in NMX-J-556-ANCE. AnnexJ provides a list of the harmonized NMX test method standards that apply to each test method.
NMX-J-040-ANCE
Wires and Cables — Determination of the Moisture Absortion in Insulations of Electrical Conductors — Test Method
NMX-J-066-ANCE
Wires and Cables — Determination of Diameter and Crosssectional Area of Electrical Conductors — Test Methd
NMX-J-093-ANCE
Wires and cables — Determination of the resistance to fire propagation on electrical conductors — Test method
NMX-J-1 77-ANCE
Wires and Cables — Determination of Thicknesses of Semiconducting Shields, Insulations, Protective Jackets or Others Elements in an Electrical Conductor— Test Method
NMX-J-1 78-ANCE
Wires and Cables — Ultimate Strength and Elongation of Insulation, Semiconducting Shields and Jackets of Electrical Conductors — Test Method
NMX-J-1 86-ANCE
Wires and Cables — Accelerated Ageing in Forced Convection Oven of Semiconducting Shields, Insulations and Jackets of Electrical Conductors — Test Method
NMX-J-1 89-ANCE
Electrical Products — Wires and Cables — Room-Temperature Flexibility Test for PVC Insulated Electrical Conductors — Test Method
NMX-J-1 92-ANCE
Flame Test on Electrical Wires — Test Method
NMX-J-1 94-ANCE
Wires and Cables — Oil Immersion, Gasoline or Other Fluid Aging for Insulations and Jackets of Electrical
Conductors — Test Method
NMX-J-21 2-ANCE
Wires and Cables — Electrical Resistance, Resistivity and Conducting — Test Method
NMX-J-31 2-ANCE
Wires and Cables — Tenile Strength and Elongation at Break of Electrical Conductors — Test Method
NMX-J-41 7-ANCE
Wires and Cables — Convection Laboratory Ovens for Evaluation of Electrical Insulation — Specifications and Test Methods
NMX-J-437-ANCE
Wires and Cables — Determination of Light Absorption Coefficient of Polyethylene Pigmented with Carbon Black — Test Methods
NMX-J-472-ANCE
Wires and Cables — Determination of the Amount of Halogen Acid Gas and the Acidity of Acid Gases Released during the Combustion of Materials — Test Methods
N MX-J-474-ANCE
Electrical Products — Wires and Cables — Determination of Specific Optical Density of Smoke Generated by Electrical Wires and Cables — Test Methods
NMX-J-498-ANCE
Vertical Tray — Flame Test — Test Method
N MX-J-553-ANCE
Wires and Cables — Weather Resistance of Insulation or Jacket of Electrical Conductors — Test Method.UL 2556 pdf download.