Las especificaciones de instalación de canalizaciones de metal se pueden encontrar en el:
a. Artículo 410 del NEC®.
b. Artículo 386 del NEC®.
c. Artículo 376 del NEC®.
d. Artículo 392 del NEC®.
b. Artículo 386 del NEC®.
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In a circuit that has both capacitance and resistance, the current will lead the voltage _____.
a. because the resistance is too small to have an effect on circuit operation b. because the voltage across the branches is the same c. by some angle between 0° and 90° d. with an impedance between 0 and 1
Which of the following factors affects the frequency and thoroughness of motor maintenance and testing?
a. horsepower rating b. overcurrent protection c. nature of service d. altitude at the motor location
An OSHA certified competent person must be on each excavation site at all working times.
Answer the following statement true (T) or false (F)
The net weight of a refrigerant cylinder is the _____
a. weight of the contents alone b. weight of the container alone c. combined weight of the container and its contents d. weight of the container, the contents, and any additional packaging