Motor full-load amps NEC 430. Branch circuit & conductor sizing. Offline.
100+ downloads
About Motor FLA NEC 430 Calculator
Motor FLA NEC 430 Calculator is a tools app developed by ZkDev.
Download Statistics
Motor FLA NEC 430 Calculator has been downloaded 110 times. In the last 30 days, the app was downloaded 32 times.
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App Information
Motor FLA NEC 430 Calculator is FREE to download. The APK download size is 20.70 MB. The latest version available is 1.0.8. The last update was on July 23, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play March 2026.
Description
NEC motor full-load amps calculator for electricians, apprentices, and electrical engineers. Look up motor FLA from NEC Tables 430.248 and 430.250, then get conductor sizing, overload protection, short-circuit protection device (SCPD), and disconnect ratings all per NEC Article 430. This electrical motor circuit calculator works 100% offline on the job site.
Whether you're sizing a motor branch circuit for a 10 HP three-phase motor, selecting the correct breaker for a 5 HP single-phase motor, or verifying overload protection settings, this motor FLA calculator gives you accurate NEC-compliant results in seconds. Use it as your motor circuit reference from full-load current lookup to complete branch circuit sizing.
MOTOR FLA CALCULATOR FEATURES: • Full-load amps lookup from NEC Table 430.248 (single-phase) and 430.250 (three-phase, induction and synchronous unity-PF sections) • Single-phase motors: 1/6 HP through 10 HP • Three-phase motors: 1/2 HP through 500 HP • 6 voltage presets: 115V, 200V, 208V, 230V, 460V, 575V • Conductor sizing per NEC 430.22 (125% of FLC) • Overload protection per NEC 430.32 (service factor adjustment) • SCPD sizing per NEC Table 430.52 with 4 motor types and 3 device types • Disconnect rating per NEC 430.110 • Copper and aluminum conductor support • Wire size recommendation from NEC Table 310.16 (75°C column) • Standard breaker and fuse size selection per NEC 240.6, including fuse-only ratings 1, 3, 6, 10, 601
NEC ARTICLE 430 REFERENCES: • NEC Table 430.248 - Single-phase motor full-load current • NEC Table 430.250 - Three-phase motor full-load current • NEC Table 430.52 - SCPD maximum rating percentages • NEC 430.22 - Motor branch circuit conductor sizing • NEC 430.32 - Overload protection sizing • NEC 430.110 - Disconnect rating requirements • NEC Table 310.16 - Conductor ampacity for wire sizing
SCPD SIZING (NEC TABLE 430.52): • Non-time-delay fuse sizing • Dual element (time-delay) fuse sizing • Inverse time circuit breaker sizing • 4 motor design types: squirrel cage, Design B energy-efficient, wound rotor, synchronous
PRO FEATURES (one-time purchase): • No ads - clean interface for professionals • Save motor calculation history • Export calculations as PDF reports for permits and records • Dark theme support
HOW THE MOTOR FLA CALCULATOR WORKS: 1. Select motor type (single-phase or three-phase) 2. Choose horsepower rating 3. Select voltage 4. Set motor design type and SCPD type 5. Choose conductor material (copper or aluminum) 6. Toggle service factor setting 7. Get complete motor branch circuit sizing instantly
The motor FLA calculator automatically provides: • Full-load amps from official NEC tables • Minimum conductor size with ampacity reference • Maximum overload protection rating • SCPD (breaker/fuse) size rounded to standard sizes • Minimum disconnect ampere rating
BUILT FOR ELECTRICIANS ON THE JOB SITE: This motor FLA calculator is designed by electricians, for electricians. Select your motor parameters, get the complete branch circuit sizing instantly - no complicated menus or unnecessary features. One-hand operation, instant results.
PERFECT FOR: • Licensed electricians sizing motor circuits daily • Electrical apprentices studying for journeyman exams • Electrical engineers and designers • Electrical contractors bidding jobs • NEC code exam preparation • Journeyman and master electrician exam study
OFFLINE & PRIVACY: • Works 100% offline - no internet needed on the job site • No account required • No data collection - your motor calculations stay on your device
Simplify your motor circuit sizing on the job site.
Recent changes: • Initial release • Motor FLA lookup from NEC Tables 430.248 and 430.250 • Conductor sizing, overload, SCPD, and disconnect calculations • Single-phase and three-phase motor support • PDF export and calculation history (Pro) • English and Spanish localization
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