Electrical Commissioning Technician Interview Questions and Answers

The status of the bus tie when the 2 incomers are energized depends on the specific electrical system design.

• In some electrical systems, the bus tie remains open when both incomers are energized.

• In other systems, the bus tie automatically closes to parallel the two incomers.

• The purpose of the bus tie is to provide redundancy and flexibility in the electrical system.

• Examples of bus tie statuses include 'open', 'closed', 'auto', or 'sync'.

External internal panel wiring connection refers to the wiring connections made between the external devices and the internal components of an electrical panel.

• External internal panel wiring connection involves connecting external devices such as sensors, switches, and actuators to the internal components of an electrical panel.

• These connections are made using wires or cables and are essential for the proper functioning of the electrical panel.

• The external devices are typical...read more

Control circuit drawing shows the control components and their interconnections, while power circuit drawing shows the power components and their connections.

• Control circuit drawing includes relays, switches, and control devices.

• Power circuit drawing includes transformers, circuit breakers, and motors.

• Control circuit drawing focuses on the logic and sequencing of operations.

• Power circuit drawing focuses on the distribution and protection of electrical power.

• Both drawings are ...read more