17 - Which network type (earthing system) has PEN conductor?       A) TN-C B) TN-S C) IT D) TN-C-S E) TT

15. Which of the following conductors in a typical separable connection plug and receptacle has a firstmake, last-break feature?A. The neutral grounded conductorB. The equipment grounding conductorC. A center wye conductorD. The grounded delta conductor

13. If the largest ungrounded service-entrance conductor for a service is 750-kcmil copper, what is the minimum size required for a wire-type main bonding jumper for the service? a) 2/0 AWG copper b) 1/0 AWG copper c) 3/0 AWG copper d) 1 AWG copper   14. If the total circular mil area of the largest ungrounded service-entrance conductor for a service is 2000-kcmil copper, what is the minimum size required for a wire-type main bonding jumper for the service? a) 4/0 AWG copper b) 250-kcmil copper c) 350-kcmil copper d) 500-kcmil copper   15. The minimum-size grounded conductor for a service supplied by a grounded system shall not be smaller than the minimum size required for a(n)______. a) Equipment grounding conductor b) System bonding jumper c) Ungrounded conductor d) Grounding-electrode conductor

The voltage drop percentage for a panel feeder with a no continuous load of 180A, using 3/0 THWN copper conductors at 480V, three-phase, and a length of 248' is