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EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition
Simmons
ISBN: 9781337516549

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BuyFindarrow_forward

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition
Simmons
ISBN: 9781337516549
Textbook Problem

  1. Do Underwriters Laboratories and the other recognized testing laboratories “approve” products?
  2. What do these testing laboratories do?

a.

To determine

Mention whether Underwriters Laboratories (UL) and the other recognized testing laboratories approve products or not.

Explanation

Description:

UL and other testing laboratories such as Intertek Testing Services (ETL listing mark), Canadian Standards Association (CSA), and Factory Mutual (FM) develop safety standards to a product and perform tests to these standards. In general, the manufacturers send their product samples to these testing laboratories. The testing laboratories conduct numerous tests to the manufacturer’s products and then decide whether the products meet the specific safety conditions or not...

b.

To determine

Explain the function of testing laboratories.

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