You are an electrician working in an industrial plant. The company is constructing a maintenance shop located 225 feet from the main plant electrical system. You are to install a 400-ampere three-phase wire system in the new maintenance shop. The service is supplied by the existing plant service. The voltage is 480 volts and the voltage drop is to be kept at 3% or below at full load. The conductors are to be aluminum. What size conductors should be installed for the new service? Express your answer to the nearest standard wire size. (Note: Determine the wire size by calculating length, resistance, and voltage drop as opposed to using the National Electrical Code

1. A14/2 type copper used for a general lighting branch circuit.                                                Ampacity:______________              Maximum Fuse or Circuit Breakers Sizes:________________      2.Three 8 AWG copper conductors with THHN insulation Installed in garage in electrical metallic tubing (EMT). The ambient temperature in the garage can reach as high as 110'F. All termination points for this circuit are rated 60'C.                            Ampacity:______________                  Maximum Fuse or Circuit Breakers Sizes:________________ 3.Four 4 AWG copper conductor with THWN insulation imstalled in EMT in a basement. All termination points are rated at 60'C.                                 Ampacity:______________                  Maximum Fuse or Circuit Breakers Sizes:________________  4. An 8/3 Type UF copper cable installed underground from a house to a detached garage to feed a 120/240-volt subpanel. All termination points are rated at 60'C.…

How is the grounded dc conductor of a photovoltaic system required to be identified? a. shall be identified at the time of installation by distintive red markings on some of the terminations b. shall be identified at the time of installation by distintive blue marking at all terminations c. shall be identified at the time of installation by a distintive grouping of wires AWG #2 d. shall be identified at the time of installation by distinctive white marking at all terminations.