The film is now available on a free-loan basis and may be obtained from the Laboratoriesa#39; Chicago, New York or Santa Clara offices. ... Ground-Fault Detectors 380 17 Oil heaters, electric 167 E31 Wire Connectors 461 10 New Editions of Standards The ... Household Refrigerators and Freezers (UL 250). Second Edition. Paragraph 160. Ice Makers (UL 563). First Edition. ... Rubber- Covered Wires and Cables (UL 44). Fifth Edition. Paragraph 170A. Snap Switches (UL 20), Fifth Edition.