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UL 489A-2013 pdf download – Circuit Breakers for Use in Communications Equipment

UL 489A-2013 pdf download - Circuit Breakers for Use in Communications Equipment. 9 Calibration Test 9.1 A circuit breaker shall comply with the Calibration tests of the Standard for Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures,...

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UL 506-2009 pdf download – Specialty Transformers

UL 506-2009 pdf download - Specialty Transformers. 3 Glossary 3.1 For the purpose of this standard, the following definitions apply. 3.2 COMPOUND-FILLED TRANSFORMER – A transformer in which the windings are enclosed with an insulating fluid that...

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UL 514A-2009 pdf download – Metallic Outlet Boxes

UL 514A-2009 pdf download - Metallic Outlet Boxes. 3.9 DRIPPROOF : Designation for a type of marine product that is constructed or protected so that falling drops of liquid or solid particles striking the enclosure do not...

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UL 514c-2009 pdf download – Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers

UL 514c-2009 pdf download - Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers. 5.3.4 The nonmetallic products covered by the requirements in Sections 6 – 1 6 and 59 – 87 are considered to be inherently resistant to...

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UL 539-2009 pdf download – Single and Multiple Station Heat Alarms

UL 539-2009 pdf download - Single and Multiple Station Heat Alarms. 3 Glossary 3.1 For the purpose of this standard the fllowing definitions apply. 3.2 ALARM SIGNAL - An audible signal intended to indicate an emergency fire...

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UL 551-2009 pdf download – Transformer-Type Arc-Welding Machines

UL 551-2009 pdf download - Transformer-Type Arc-Welding Machines. 4 References 4.1 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...

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UL 565-2013 pdf download – Liquid-Level Gauges for Anhydrous Ammonia and LP-Gas

UL 565-2013 pdf download - Liquid-Level Gauges for Anhydrous Ammonia and LP-Gas. 4 Assembly 4.1 A gauge, when not assembled by the manufacturer as a unit, shall be arranged in as few subassemblies as practical; and shall...

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UL 569-2013 pdf download – Pigtails and Flexible Hose Connectors for LP-Gas

UL 569-2013 pdf download - Pigtails and Flexible Hose Connectors for LP-Gas. 7 Materials for Flexible Hose Connectors 7.1 The hose used in the construction of a flexible hose connector shall be provided with a reinforced synthetic-rubber...

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UL 580-2013 pdf download -Tests for Uplift Resistance of Roof Assemblies

UL 580-2013 pdf download -Tests for Uplift Resistance of Roof Assemblies. 7.2 For a Class 1 5 rating, the test pressures shall not exceed the specified values by more than 0.2 inch of water (49.8 Pa) for...

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UL 731-2009 pdf download – Oil-Fired Unit Heaters

UL 731-2009 pdf download - Oil-Fired Unit Heaters. 2.1 1 BURNER, MECHANICAL-ATOMIZING TYPE – A power-operated burner which prepares and delivers the oil and all or part of the air by mechanical process in controllable quantities for...

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