Why should the electrical service to the house be checked before installing an electric furnace in an older house?

What will be an ideal response?


The current requirements of an electric furnace can exceed the available current in older houses.

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70 as an Excess-3 code number is ____________________.

Fill in the blank(s) with the appropriate word(s).

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If a 480V, three-phase motor control center feeds a 50hp motor (65A), a 40hp motor (52A), and a 10hp motor (14A), the minimum feeder ampacity is _____.

a. 147.25A b. 161.25A c. 175.8A d. 190.85A

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Chain slings are normally used for _____.

a. lifting fragile objects b. lifting rough castings c. lifting ornamental materials d. routine lifting operations

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Which of the following is not one of the workplace safety legislations in the world?

A) OSHA B) EOSH C) CCOHS D) EASHW

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