Which of the following factors must be taken into account when determining the wire size to use for an aircraft installation?

• Allowable power loss, permissible voltage drop, current carrying capability of the conductor, type of load (continuous or intermittent).
• Mechanical strength, allowable power loss, resistance of current return path through the aircraft structure, permissible voltage drop.
• Allowable power loss, resistance of current return path through the aircraft structure, current carrying capability of the conductor, type of load (continuous or intermittent).