Are You Ready for the 2017 NEC Updates?

Have no fear, ESL is here! ESL’s TripleSwitch is 2017 NEC 700.3 (F) compliant when used in conjunction with an ATS. According to 2017 NEC provision 700.3(F), legally required systems must be able to connect a temporary source of power for emergency systems which rely on a single alternate source of power which will be disabled for maintenance…

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3 Reasons Why UL 1008 Should Be Specified

When comparing NRTL Listings of different products, it is important to know what the appropriate UL standards are and how they apply to your specific application. You may not always be purchasing what you think you are purchasing. UL 1008 was specifically created for transfer switch equipment. Products with a UL 1008 certification ensure the…

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Streamline Load Bank Testing

Load bank testing is necessary for facilities such as water wastewater plants, data centers, high rise buildings, and nursing care centers. According to NEC Article 708 and NFPA 110, automatic transfer switches are required to be regularly tested. These regulations are in place to ensure that when utility power goes down, the backup equipment will…

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Is your Manual Transfer Switch really UL Listed?

If you purchase or specify manual or automatic transfer switches, the subject of UL 1008 is bound to come up at some point. The UL 1008 listing is not just a performance standard, it is a design and construction standard in the industry.  In order to receive a UL 1008 listing, a transfer switch requires…

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