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UL-94 is now harmonized with IEC 60695-11-10 and 60695-11-20 and ISO 9772 and 9773. [2] The VW-1 (vertical wire burn) rating is sometimes erroneously associated with UL 94, but it (and some other flammability tests) is described by UL 1581 (Reference Standard for Electrical Wires, Cables, and Flexible Cords).
UL 94 Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances; UL 2221 Tests of Fire Resistive Grease Duct Enclosure Assemblies; UL 1479 Fire Tests of Through-Penetration Firestops; UL 1709 Rapid Rise Fire Tests of Protection Materials for Structural Steel
A fire test can be conducted to determine the degree of flammability. Test standards used to make this determination but are not limited to the following: Underwriters Laboratories UL 94 Flammability Testing; International Electrotechnical Commission IEC 60707, 60695-11-10 and 60695-11-20; International Organization for Standardization ISO 9772 ...
FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing). "FR" stands for "flame retardant", and does not denote that the material complies with the standard UL94V-0 unless testing is performed to UL 94, Vertical Flame testing in Section 8 at a compliant lab. The ...
Flame spread, or surface burning characteristics rating, [1] ... UL 94 Standard for Tests for Flammability of Plastic Materials for Parts in Devices and Appliances Use
UL94 has a minimum Motor octane number (MON, which is the octane rating employed for grading aviation gasoline) of 94.0. 100LL has a minimum MON of 99.6. [ 16 ] [ 60 ] AKI is the octane rating used to grade all U.S. automotive gasoline (typical values at the pump can include 87, 89, 91, and 93), and also the 93UL fuel from Airworthy AutoGas.
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It is a form of fire-resistance rating. Circuit integrity is achieved via passive fire protection means, which are subject to listing and approval use and compliance. Alternatively, cable construction and materials can achieve fire-resistance ratings on their own such as mineral-insulated copper-clad cable, or MI cable.