According to Section 310.15(B)(7) in the NEC®, the minimum conductor size for a 200-ampere residential service entrance is _________ Cu or _________ Al.

a. 4 AWG; 2 AWG
b. 3 AWG; 1 AWG
c. 2 AWG; 1/0 AWG
d. 2/0 AWG; 4/0 AWG


d. 2/0 AWG; 4/0 AWG

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On a decimal-inch vernier caliper, a measurement is read by adding the ____________________ reading on the vernier scale to the reading from the main scale.

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

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What is the complement of 84o?

A. 276o B. 96o C. 16o D. 6o

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What is the greenhouse effect?

What will be an ideal response?

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A piece of copper bus bar is 0.75 millimeter by 100 millimeters in cross section. What is the cross-sectional area in square centimeters? Carry the answer to two decimal places.

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

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