UL/CSA approval of small motors. UL / CSA approval of Saia- Burgess motors.
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UL = Underwriters Laboratories Inc., US:an independent, not-for-profit product-safety testing and certification organization, first founded in 1894, second foundation in 1903, 123 UL centres worldwide, 62 laboratories and certification facilities, more than 71.000 companies use UL marks,
Historical background: initiative from insurance companies
Motivation: avoid fire (e.g. many houses made of wood) and other hazards
More than 800 valid UL standards on safety developed1,291 UL and 376 CSA standards for different products
Approbation of products linked with factory inspection (each quarter or half a year)