MEP Library

07/07/2026

https://www.linkedin.com/posts/mgahuet222_transformer-fault-current-calculation-share-7474400536830668800-rG4I/?utm_source=share&utm_medium=member_ios&rcm=ACoAACMiQNMB-twtRm4yMyAAiwTaFSrYOI0gClg

⚡Transformer Fault Current Calculation – Why It Matters Transformer fault current calculation helps determine the maximum short-circuit current available at the transformer secondary side. This is a critical step in power system design, testing, and protection. Applications: ✔️ Circuit Break...

06/07/2026

📚Behind every reliable telecom network is a structured hierarchy of standards—this diagram breaks down how TIA standards connect and support system design.

Comment below the TIA standards or codes you know from this diagram 👇

26/06/2026

⚡ Air Terminal Positioning: The 3 Core Methods (IEC 62305 & NFPA 780) Looking for a quick cheat sheet on lightning protection design?⁉️ Here is a breakdown of the 3 standard methods used to position air terminals on a building:

1. Rolling Sphere Method
2. Protection Angle Method
3. Mesh Method

🆓Drop comment on any applicable IEC code requirements.

25/06/2026

⚡ Electrical Sizing & Calculation Cheat Sheet ⚡

Ditch the massive code books for a second. Here is a rapid reference sheet for on-site calculations:
🔹 Ohm's Law & Power Triangle foundations
🔹 1-Phase vs. 3-Phase balanced motor power math
🔹 Sizing multipliers ($1.25\times$ rule) for breakers & transformers
🔹 Voltage drop thresholds ($

25/06/2026

📋 Electric Motor Basics

Need a quick refresher on electric motors? This handy reference sheet covers all the daily essentials in one spot:

✅ Motor Types: Induction, Synchronous, and DC basics.
✅ Nameplate Data: What abbreviations like FLA and Service Factor (SF) actually mean.
✅ Temperature Limits: Understanding Insulation Classes (A, B, F, H).
✅ Maintenance Tips: Quick steps for Megger testing and basic troubleshooting.

💡 Quick Tip: Never heavily oversize a motor for a small load, or your operating efficiency and power factor will drop!

💾 Save this post so you can easily pull it up next time you are working in the field or the lab!

25/06/2026

⚡ How a Star-Delta Starter Works

Starting a large industrial motor on full voltage can cause a massive current spike. That’s where a Star-Delta starter comes in!

Here is how it works step-by-step:
🔄 Stage 1 (Star): Starts the motor at a reduced voltage. This safely drops the starting current by about 33% to protect your power supply.
🚀 Stage 2 (Delta): Once the motor gains speed, a timer automatically switches it to Delta mode for full voltage, full torque, and continuous running.

📊 Swipe to see the exact current, torque, and voltage curves during the start-up sequence!

⚠️ Keep in mind: Because Star mode reduces current, it also reduces torque. This starter is perfect for pumps and fans, but not ideal for heavy, high-inertia starting loads.

💾 Save this graphic for a quick technical reference whenever you need it!

24/06/2026

⚡ IMPORTANT IEC STANDARDS ⚡

IEC standards provide the foundation for safe, reliable, and efficient electrical systems worldwide. They help ensure consistency, quality, and compliance throughout the design, construction, testing, commissioning, and operation of electrical installations.

This infographic highlights some of the key IEC standards commonly referenced across the electrical engineering industry.

📚 Save this reference for future use and share it with your colleagues.

💬 Comment below with the IEC standard you'd like to learn more about. The most requested codes may be featured in future posts with practical explanations and applications.

23/06/2026

📚ETAP Protective Device Coordination


Link PDF File : https://drive.google.com/file/d/1QL7Ofh11fkrFzqd-_L8zLz5Or94_t3lb/view?usp=drive_link

23/06/2026

📚ETAP Battery Sizing & Discharge


Link PDF File : https://drive.google.com/file/d/1lBzrCKon-WYvTSu8lsKJS6UaE7ffasvm/view?usp=drive_link

23/06/2026

📚ETAP Harmonic Analysis


Link PDF File : https://drive.google.com/file/d/12psudTRRwgcZoXX53--DArQuzOFAXOUq/view?usp=drive_link