FAULT CURRENT18 MIN
Understanding Available Fault Current
What "available fault current" actually means at a service entrance — and why utility data matters.
INTERACTIVE POWER SYSTEMS LAB
Three phases.
One curriculum.
Browser-based simulators, calculators, and field-focused learning tools for NEC practice, protection, arc flash, grounding, PLCs, transformers, motors, and NETA-style testing.
NECPROTECTIONARC FLASHGROUNDINGPLCNETA
49LABS IN CATALOG
9LEARNING PATHS
19CALCULATORS
8FIELD NOTES
BROWSE BY CATEGORY
Pick a discipline
NEC19 LABS
NEC Calculators
Code-aware calculators for branch circuits, feeders, services, and loads.
EXPLORE CATEGORY
PROT6 LABS
Protection & Relays
Relay coordination, differential schemes, and protection fundamentals.
EXPLORE CATEGORY
AF1 LABS
Arc Flash
Incident energy concepts, PPE categories, and arc flash boundary intuition.
EXPLORE CATEGORY
SC4 LABS
Fault Current
Short-circuit analysis, AIC checks, and available fault current.
EXPLORE CATEGORY
GND3 LABS
Grounding & Bonding
Grounding electrode systems, equipment bonding, and NEC Article 250.
EXPLORE CATEGORY
MTR4 LABS
Motors
Motor branch circuits, starting behavior, and field tests.
EXPLORE CATEGORY
XFMR4 LABS
Transformers
Vector groups, winding resistance, and transformer fundamentals.
EXPLORE CATEGORY
PQ2 LABS
Power Quality
Harmonics, power factor, and waveform analysis.
EXPLORE CATEGORY
PLC2 LABS
PLC & Controls
Ladder logic, industrial sensors, and control systems.
EXPLORE CATEGORY
NETA10 LABS
NETA Field Testing
Acceptance and maintenance testing of electrical apparatus.
EXPLORE CATEGORY
PS15 LABS
Power Systems Fundamentals
One-lines, sequence components, and core analysis.
EXPLORE CATEGORY
FEATURED LABS
ALL LABS Hands-on, in the browser
ARC FLASHREADY
Arc Flash Concept Simulator
Explore how voltage, available fault current, working distance, clearing time, equipment configuration, and protection features influence conceptual incident energy and arc-flash boundary behavior.
CONCEPTUAL MODELNOT IEEE 15845 SCENARIOS208 V – 15 kV
INTERMEDIATEVIEW LAB
FAULT CURRENTREADY
Fault Current & Short-Circuit Simulator
Model three-phase, SLG, LL, and DLG faults across a four-bus radial system using the per-unit method — with configurable source impedance, transformer, cable, and relay — and a clear statement of what a code-grade study includes that this educational tool does not.
4 FAULT TYPES4 BUS LOCATIONSPER-UNIT METHODX/R ASYMMETRIC MODEL
ADVANCEDVIEW LAB
PROTECTION & RELAYSREADY
Breaker Trip Unit Simulator
Set LSIG trip unit parameters on a live TCC and see how Long-Time, Short-Time, Instantaneous, and Ground-Fault regions respond to load and fault current — with six presets, five industry-specific Design Lab scenarios, a side-by-side Compare tab, and an Event Simulator.
LSIG TRIP UNIT4 FRAME SIZESDESIGN LAB SCENARIOSLIVE TCC PLOT
INTERMEDIATEVIEW LAB
NEC CALCULATORSREADY
Voltage Drop Calculator & Explorer
Calculate AC voltage drop for single- and three-phase circuits across five voltages and two conductor materials — with live parametric charts (drop vs. length, vs. current, vs. temperature), a copper-vs-aluminum comparison, conductor explorer, six quick presets, and a scenario lab.
120–600 V · 1φ / 3φNEC CH. 9 TABLES6 PARAMETRIC CHARTSCu vs Al COMPARISON
BEGINNERVIEW LAB
PROTECTION & RELAYSREADY
Protective Relay Coordination / TCC Visualizer
Plot upstream and downstream IEC IDMT relay, breaker, and fuse curves on a live TCC — then verify CTI margin, inject fault current, and step through the trip sequence using six preset coordination scenarios.
IEC IDMT CURVES6 PRESET SCENARIOSCTI MARGIN CHECKTRIP SEQUENCE ANIMATOR
ADVANCEDVIEW LAB
POWER SYSTEMS FUNDAMENTALSREADY
Symmetrical Components & Fault Visualizer
Decompose unbalanced three-phase systems into positive, negative, and zero-sequence networks — then drive fault current through them and see every sequence quantity update in real time.
SEQUENCE NETWORK SOLVER4 FAULT TYPES3 GROUNDING MODES480 V – 138 kV
ADVANCEDVIEW LAB
LEARNING PATHS
ALL PATHS Sequenced labs, by discipline
PATH · 014 MODULES
Electrical Fundamentals
Ohm's law to three-phase intuition through interactive labs.
BEGINNER · ~6 HOURS
PATH · 025 MODULES
NEC Calculation Practice
Branch circuits, feeders, services, and load calculations.
INTERMEDIATE · ~8 HOURS
PATH · 034 MODULES
Power Systems Analysis
Per-unit, fault current, and sequence networks.
ADVANCED · ~10 HOURS
PATH · 044 MODULES
Protection & Relay Coordination
Build coordinated TCCs and reason about selectivity.
ADVANCED · ~8 HOURS
PATH · 053 MODULES
Arc Flash & Electrical Safety
Incident energy, boundaries, and PPE selection intuition.
INTERMEDIATE · ~5 HOURS
PATH · 064 MODULES
Motors & Transformers
Branch circuits, starting behavior, and vector groups.
INTERMEDIATE · ~7 HOURS
FIELD NOTES
ALL NOTES Short technical writing
FIELD NOTES22 MIN
NETA: What NETA Testing Verifies
A practical look at what acceptance and maintenance tests are really checking for.
NEC22 MIN
NEC Continuous vs Noncontinuous Loads
Learn when the NEC 125% rule applies, when it doesn't, and how to separate continuous and noncontinuous loads without bad math.
PROTECTION20 MIN
Why Relay Coordination Matters
Selectivity, miscoordination, and how a single bad setting can turn a local fault into a larger outage.
HOW PHASE ACADEMY WORKS
Concept → practice → lab → judgment
01
Learn the concept
Short, plainspoken explanations grounded in the standards you actually use.
02
Practice the calculation
Browser calculators that show your work — units, tables, and intermediate steps.
03
Launch the lab
Interactive simulators for waveforms, faults, relays, transformers, and more.
04
Apply with judgment
Field-aware workflows that pair learning with practical engineering judgment.
PROFESSIONAL DISCLAIMER
For education, training, and preliminary support only. Verify results against applicable codes, standards, manufacturer data, project specifications, AHJ requirements, and qualified engineering judgment.