Here you can download some UL standards I collected.You must remember you can use them only for your personal learning ,but for business.

UL 1684A-2007 pdf download

UL 1684A-2007 pdf download

UL 1684A-2007 pdf download.Supplemental Requirements for Extra Heavy Wall Reinforced Thermosetting Resin Conduit (RTRC) and Fittings. 1 Scope 1 .1 These requirements are supplementary to the applicable requirements in the Standard for Reinforced Thermosetting Resin

Read more
UL 916-2015 pdf download

UL 916-2015 pdf download

UL 916-2015 pdf download.Energy Management Equipment. 5.7 ISOLATED LIMITED-ENERGY SECONDARY CIRCUIT – A circuit derived from an isolated secondary winding of a transformer having a maximum capacity of 1 00 volt-amperes and an open-circuit secondary-voltage

Read more