What are the advantages of using three-wire service in general distributions?

What will be an ideal response?


The advantages of using three-wire service in general distribution systems include (1) a reduction in the cost of main feeders and subfeeders, (2) the provision of 120-volt service for normal lighting circuits and 240-volt service for power and motor loads, and (3) the conservation of electrical energy by reducing wattage loss in transmission.

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A(n) ____________________ is similar in construction to a builder’s level, but has a telescope mounted on a horizontal pivot so that it can be rotated vertically to measure vertical angles.

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

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What is the concentration of dissolved solids (as NaCl) in the combined stream downstream of the discharge

A soft drink bottling plant discharges a wastewater with a dissolved solids concentration of 10,000 mg/l NaCl, at a rate of 100 gal/min to a stream. The stream above the discharge has a volumetric flowrate of 1.0 MGD and a dissolved solids concentration of 25 mg/l. Below the discharge point is a prime fishing spot, and the fish are intolerant of salt concentrations above 200 ppm. What will be an ideal response?

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How does reclaimed refrigerant differ from recovered or recycled refrigerants?

A) Reclaimed refrigerants can be reused. B) Reclaimed refrigerants can be put into new systems. C) Reclaimed refrigerants cannot be put back into the same system. D) Reclaimed refrigerants cannot be reused.

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Technician A says that customer expectations may be different for a collision repair business than for a custom paint company. Technician B says that a collision repair business returns vehicles to their pre-accident condition. Who is correct?

A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B

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