The maximum size dual-element fuse for a 40hp, 3Ø, 460V motor with a Design Letter D is _____.
a. 60A
b. 100A
c. 125A
d. 175A
b. 100A
52A (see NEC Table 430.250) x 1.75 (see NEC Table 430.52) = 91A
Next standard size per NEC Section 240.6(A) is 100A
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In many instances, it is desirable to group voltage sources, particularly batteries, to obtain the correct ____________________ and current capacity.
Fill in the blank(s) with the appropriate word(s).
While having a discussion, Technician A says that bushings should always be lubricated. Technician B says that bushings should not be lubricated. Lubricants attract dirt and can sometimes damage the bushing material. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
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Indicate whether the statement is true or false