Standards World

UL 1778:2017 pdf free download - STANDARD FOR SAFETY Uninterruptible Power Systems. 2.6.3.4 Resistance of earthing conductors and their terminations Replace item b) of the RD with the following: b) For equipment powered an AC MAINS SUPPLY,...

UL 1730:2017 pdf free download - STANDARD FOR SAFETY Smoke Detector Monitors and Accessories for Individual Living Units of Multifamily Residences and Hotel/Motel Rooms. 6.3.2 A hole larger than 1-3/8 inch (34.9 mm) diameter shall have a...

UL 1709:2017 pdf free download - STANDARD FOR SAFETY Rapid Rise Fire Tests of Protection Materials for Structural Steel. 5.3 The temperature of the open section is to be measured by no fewer than five thermocouples located...

UL 1676:2017 pdf free download - STANDARD FOR SAFETY Conductive-Path and Discharge-Path Resistors for Use in Radio-, Video-, or Television-Type Appliances. 5.4 Dielectric voltage-withstand test 5.4.1 Each resistor tested as specified in 5.1.1 — 5.3.2 shall be...

UL 1030:2017 pdf free download - STANDARD FOR SAFETY Sheathed Heating Elements. 15.5 For the one-second single-phase and direct-current tests, the element need not be preheated. The potential is to be applied while the heating element is...

UL 1018:2017 pdf free download - STANDARD FOR SAFETY Electric Aquarium Equipment. 6.6.4 Motor and speed controls 6.6.4.1 A control used to start, stop, regulate or control the speed of a motor shall comply with the: a)...

UL 810A:2017 pdf free download - STANDARD FOR SAFETY Electrochemical Capacitors. 7 Insulating Materials 7.1 A material used for mounting of uninsulated capacitor terminals whose deterioration could lead to a risk of fire or electric shock condition...

UL 758:2017 pdf free download - STANDARD FOR SAFETY Appliance Wiring Material. 5.7.7 A compressed-stranded conductor shall be a round conductor consisting of a central core wire surrounded by one or more layers of helically laid wires...

UL 496:2017 pdf free download - STANDARD FOR SAFETY Lampholders. 4.2.2.2 Flammability 4.2.2.2.1 A thermoplastic (polymeric) insulating matenal used to enclose electrical parts or used to provide direct or indirect support of live parts shall be classed...

UL 467:2017 pdf free download - STANDARD FOR SAFETY Grounding and Bonding Equipment. 6.2.4 A protective-type clamp of the strap type shall have a rigid metal base to be seated on the grounding electrode, and if the...