Electrical Wiring: Installation and Wiring of Sensitive Electronic Equipment

What does Article 647 cover?

Article 647 covers the installation and wiring of sensitive electronic equipment that is connected to a separately derived system operating at:

a. 100 volts

b. 112 volts

c. 120 volts

d. 180 volts

Answer:

The question pertains to Engineering (particularly electrical). It refers to an article (likely from an electrical code) outlining the procedures for wiring sensitive devices to a separate system, discussing various potential voltages.

Explanation:

The subject of this question falls under the field of Engineering, specifically power systems and electronics. Article 647 appears to be referring to a specific regulation or guideline in an electrical code, which is concerning the installation and wiring of sensitive electronic equipment connected to a separately derived system operating voltage. The given potentials, namely, 100 volts, 112 volts, 120 volts, and 180 volts, refer to potential line-to-line voltages in an electrical system. The '60 volts to ground' part indicates the maximum voltage between any line conductor and the earth (ground).