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EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition
Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
ISBN: 9781337516549

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Section
BuyFindarrow_forward

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition
Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
ISBN: 9781337516549
Chapter 7, Problem 12R
Textbook Problem
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The letter “E” in a circle on a ballast nameplate indicates that the ballast _________________

___________________________________________________________________________

___________________________________________________________________________

To determine

Find the meaning of letter “E” in a circle on a ballast nameplate.

Explanation of Solution

Discussion:

In 1988, the National Appliance Energy Conservation amendment, Public law 100-357 prohibits the manufacturers from producing ballasts with the power factor less than 90%.

The energy saving ballasts that exceeds or meets the law provided by the federal standards is represented as letter “E” in a circle...

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