Fault Current Calculator (PFC) vs IEE Business

Fault Current Calculator for iPhone and iPad is a fast, free tool for electricians, contractors, and engineers. Calculate Prospective Fault Current (PFC), Prospective Short-Circuit Current (PSCC), and Prospective Earth Fault Current (PEFC). Enter any two known values - voltage, loop impedance (Zs/Ze), or fault current - and the app instantly calculates the third. KEY FEATURES: PSCC and PEFC calculations: Calculate prospective short-circuit current for L-N or L-L faults and prospective earth fault current for L-E faults. Single-phase and three-phase support: Perform fault-current calculations for both system types. Automatic calculations: Enter any two known values to auto calculate the third. Loop-impedance calculator: Calculate Zs or Ze from voltage and prospective fault current. Formula display: See the formula used for each calculation so you can understand and verify the result. Works offline: Use the app in roof spaces, basements, plant rooms, and other locations without a signal. Dark mode and light mode: Maintain a clear display in different site conditions. 16 languages: Fully translated for electricians worldwide (af, ar, de, es, en, fr, hi, id, it, ja, ko, nl, pl, pt, ru, zh). Fast and free: A clean interface designed to deliver results without unnecessary steps. DEFINITIONS: AIC (Ampere Interrupting Capacity), often written as kAIC for kilo-Amperes, is a specific rating for protective devices that open a circuit, such as circuit breakers and fuses. SCCR (Short-Circuit Current Rating) is the maximum fault current that a complete piece of equipment or electrical assembly (like an industrial control panel, switchboard, or HVAC unit) can safely withstand without causing a hazard. Electrical calculations should be independently verified before safety-critical work. Ensure the calculated prospective fault current does not exceed the protective device's rated breaking capacity. For additional tools, upgrade to Electrical Tools & Reference, which includes calculators for kVA, Max Zs, cable sizing, and more. Pro Certs Software - trusted by electricians since 2011.

IEE Business is a free international B2B procurement platform for the power and electrical engineering industry. It connects buyers, suppliers, and experts through professional content, AI-powered engineering tools, electrical calculators, fair supplier visibility, and direct business relationships—with no membership fees, advertising fees, or transaction commissions. Core Feature Highlights 1.One-Stop Global Sourcing with Fair Visibility As a zero-barrier international platform, it comprehensively covers full-category electrical equipment, from power and distribution transformers and medium/high-voltage switchgear to low-voltage electrical components, power wire and cables, and renewable energy/EV charging systems. Whether for routine procurement or new product development, it helps you enjoy direct, commission-free connections with premium global suppliers. 2.Full-Lifecycle Project Solutions Providing full-chain solutions spanning project financing, engineering design, procurement, construction (EPC), transmission, transformation, distribution, and automation consulting. A rich library of global benchmark cases provides robust practical references for all types of power projects. 3.AI Engineering Tools & Professional Electrical Calculators (Integrating AI-powered engineering tools and professional electrical calculators tailored for electrical engineers, on-site technicians, and project designers. It comprehensively supports multi-dimensional precision calculations for transformers, cables, currents, and motors, accompanied by rich technical resources and pinout queries. Whether for front-end scheme design, on-site construction auditing, or subsequent troubleshooting, it serves as your essential, portable smart technical assistant.) 4.Industry Frontier Insights & Knowledge Base Gathering in-depth industry blogs, real-time news, and professional technical articles. Spanning inspection and testing, selection and installation, failure and maintenance, applications and trends, as well as design and simulation, it helps you stay constantly aligned with the industry's pulse. 5.Co-Building the Global Power Ecosystem Join professional communities and industry alliances to establish deep connections with top global experts, certification organizations, and ecosystem partners, expand your international network, and share new opportunities in cross-border trade and project collaboration.