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Voltage Drop

Calculates voltage drop along a cable run using tabulated mV/A/m values from AS/NZS 3008.1.1 for copper and aluminium multicore cables, adjusted for power factor and circuit type. Checks compliance against the AS/NZS 3000 five-percent limit to verify that voltage at the load stays within acceptable limits for equipment operation.

inputs

6 fields

context

4 archetypes

engine

with-tool

outputs

4 scored fields

contract fields

Parameter Map

6 inputs to 4 scored outputs

  • cable_size_mm2

    enum

    Cable conductor cross-sectional area

    1.52.54610162535+7

  • length_m

    float

    Cable route length (one way)

    1 to 500m

  • load_current_a

    float

    Design load current

    0.5 to 500A

  • power_factor

    float

    Load power factor

    0.5 to 1

  • conductor_material

    enumfrom archetypehidden in hard

    Conductor material

    copperaluminium

  • circuit_type

    enum

    Circuit type

    single_phasethree_phase
vc_mv_per_a_mtol 0.03

Effective voltage drop rate Vc (mV/A/m)

voltage_drop_vtol 0.03

Total voltage drop (V)

voltage_drop_percenttol 0.03

Voltage drop as percentage of supply voltage (%)

complianttol 0.01

Compliance with 5% limit (1.0 = pass, 0.0 = fail)

visibility contract

Difficulty Ladder

all_giveneasy

Single phase copper, standard residential sizes, all params given

all fields visible
all_givenmedium

Any circuit type and material, commercial/industrial sizes

all fields visible
partialhard

Conductor material hidden, agent must infer from installation context

conductor_material

scenario bands

Archetype Atlas

residential_lighting

2 contexts

Residential lighting circuit

length_m5 to 30
load_current_a1 to 10

sydney-suburban / melbourne-suburban

residential_power

2 contexts

Residential power outlet circuit

length_m10 to 40
load_current_a10 to 32

sydney-suburban / brisbane-suburban

commercial_submain

2 contexts

Commercial building submain with copper conductors

length_m20 to 200
load_current_a50 to 300
conductor_materialcopper

sydney-cbd / melbourne-cbd

industrial_feeder

2 contexts

Industrial feeder cable with aluminium conductors

length_m50 to 500
load_current_a100 to 500
conductor_materialaluminium

hunter-valley-industrial / perth-industrial

rendered task

Generation Preview

sydney-cbd-commercial-submain-preview

difficulty
hard
visibility
partial
archetype
commercial_submain
site context
sydney-cbd
instruction excerptvoltage-drop_calc.py

visible fields

  • cable_size_mm216 mm²
  • length_m20 to 200 m
  • load_current_a50 to 300 A
  • power_factor0.8
  • circuit_typesingle_phase

withheld schema

conductor_materialvc_mv_per_a_mvoltage_drop_vvoltage_drop_percentcompliant
Commercial building submain with copper conductors. sydney-cbd. Required outputs: vc_mv_per_a_m, voltage_drop_v, voltage_drop_percent, compliant