Elevator Mechanic Practice Exam

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Your pulling 15 #14awg, 27 #16awg, 57 #18awg wires. How many spares are needed?

1 #14, 2 #16, 4 #18
2 #14, 2 #16, 4 #18
2 #14, 3 #16, 6 #18
3 #14, 3 #16, 8 #18

The correct answer is: 1 #14, 2 #16, 4 #18

The correct choice is based on the typical industry practice of determining spare wires needed for installation and maintenance. When pulling wires, it is standard to calculate a certain number of spare wires based on the total count of each gauge being pulled. This ensures that in case of any damage or issues that arise during installation, there are additional wires available to complete the job without delays. For the given quantities of wires, the industry standard often suggests having around 10% to 20% additional spare wires, depending on the gauge size and the environment in which they will be installed. Typically, lower gauge wires (like #14) might require fewer spares compared to higher gauge wires (like #18). In this case, the correct answer reflects a common recommendation for spares, with one spare #14, two spare #16, and four spare #18 wires. This allocation accommodates potential needs without excessively increasing material costs or complexity during installation.