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What is the power extension cord? What are the types?

Update:15-10-2020
Summary:

1.Introduction A power extension cord (also called an e […]

1.Introduction
A power extension cord (also called an extension cord) is a cable with multiple conductors used for temporary electrical connections that require flexibility. Power extension cords are widely used in various types of electrical tools, equipment, household appliances and machinery used in operation.
Extension cords can be used in commercial, industrial and residential applications. Some extension cords are waterproof

2. Type
Extension cords, commonly used types include SJT, SVT, SEOW, SJ, SJOW, SJOOW, SO, SOW
Extension cords are usually made of flame-proof and heat-resistant materials, and the operating temperature range is −20 °C (−4 °F) to 90 °C (194 °F)

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