For the following network: a. Find the total impedance Zr. b. Find the current through the inductor using the current divider rude. Q.1 560n 300 1 E - 100 V 20 560 1 - 400 0 400 1 000

If an electrical system operates at a potential higher than 600 volts, the nonmetallic conduit must be encased in at least_of concrete. A. 1 inch B. 2 inches C. 4 inches D. 6 inches

Please answer in typing format solution please only Please answer all subparts is compulsory to answer in your Please I will like it please

What is the total number of systems?

Assuming all terminals are rated 75°C and you have a  #10 AWG THHN/THWN conductors in a conduit and the conduit is run on the roof off a office building where the ambient temperature never rises above 30°C the largest size circuit breaker or fuse permitted to protect these wires is:?

The wording that I am running into with questions such as "The number of conductors required to be installed between three-way and four-way switches is " is confusing.  The text is not expalining this in a way that I am understanding anything other than grounding conductor, which is optional unless I am using a metal box.  So what type of "conductor" is beng discussed?

QUESTION 3 We are running 3 wires and a ground in a RMC to a control panel with a 60 amp circuit breaker disconnect in the control panel. The conduit is run along the ceiling where the ambient air temperature is 100 degrees. The control panel feeds our secondary cooling pump. What size are the ungrounded conductors? All conductors have typeTHHN insulation.