OBC Detection, Lighting & Power study plan

Map the full outboard detection chain from sensor head to alarm output, labeling each interface point on a hand-drawn block diagram.

Distinguish passive infrared, microwave, dual-technology, and beam sensor operating principles, and state one coverage limitation for each.

Compute detection coverage for a rectangular outboard zone using mounting height, sensor field of view, and manufacturer-published range.

Identify the four common causes of detection dead zones (masking, obstruction, terrain, mounting angle) and describe the field check that reveals each.

Explain how detection zones overlap to create layered coverage, and calculate the minimum overlap needed to avoid a single point of failure.

Compare sensor placement strategies for perimeter, approach, and asset-level detection, and justify which suits an outboard installation.

Describe alarm verification logic (sequential confirmation, time windows) and how it reduces nuisance alarms without creating blind spots.

List environmental factors (fog, rain, temperature gradients, vegetation) that degrade each sensor type and state the mitigation for each.

Classify outboard luminaire types (flood, spot, linear, bollard, wall-pack) by beam pattern and intended coverage task.

Calculate illuminance at a target surface from luminaire output, beam angle, and mounting distance, and compare the result to a stated target level.

Trace a complete outboard lighting circuit from distribution panel through switch, control device, and luminaire, labeling every conductor.

Identify ingress-protection and temperature ratings required for an outboard environment and explain what each rating number means.

Describe three lighting control methods (photocell, timer, occupancy) and state the failure mode of each when it fails in the safe direction.

Size an overcurrent protective device for a given luminaire load using continuous-load rules and conductor ampacity.

Explain the purpose and placement of ground-fault protection on outboard lighting circuits.

Draw a single-line diagram of an outboard lighting branch circuit including protection, control, and grounding.

Compare radial, ring, and distribution-block outboard power topologies and state when each is preferred.

Calculate voltage drop over a given cable run and determine whether the result is acceptable for the served load.

Select overcurrent, residual-current, and surge protective devices for a specified outboard distribution and justify each rating.

Describe selective coordination between upstream and downstream protective devices and demonstrate it with a worked example.

Select conductor type, insulation, and cross-sectional area for wet, buried, and exposed outboard runs, citing the governing constraint for each.

Demonstrate correct termination practice for screw, crimp, and spring terminals, listing the defect each method is prone to.

Distinguish grounding, bonding, and equipotential bonding, and explain the fault-current path each one establishes.

Explain how to verify protective-earth continuity and insulation resistance, and state the acceptance criterion for each.

Sequence a systematic fault-diagnosis procedure for a dead outboard lighting circuit, from supply to luminaire.

Interpret insulation-resistance, earth-continuity, and loop-impedance readings to localize a fault to a specific section.

Describe safe isolation and lock-off procedure before working on outboard equipment, including proving the tester.

Identify the five most common outboard electrical defects and the test that detects each.

Synthesize all six domains into a single integrated outboard system description covering detection, lighting, power, wiring, and grounding.

Complete a timed mixed-domain practice set and categorize every error by domain and by cause (knowledge, calculation, misreading).

Re-derive the three most error-prone calculations from memory without notes.

State your personal weak-area remediation plan with specific actions for the final review period.