TT, IT & TN Earthing System Explanation | Grounding Systems

IEC 60364 is the apex level document that informs the standards for LV Electrical installations around the world.

The IEC 60364 standard has defined three types of Earthing Systems, TT, IT, and TN systems. Each system has a different application.

All the earthing systems seem technical and difficult to understand. However, we have figured an easy way out! For a simple explanation of each type of earthing system, watch our video and select the right one for your project.

0:00 Introduction
0:43 Earthing Systems
1:03 IEC Standard
2:37 TN SYSTEM
2:50 Explanation of Letters - TT, IT & TN
3:31 TT Earthing System
4:10 IT Earthing System
4:50 TN-S Earthing System
5:18 TN-C Earthing System
5:51 TN-C-S Earthing System

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[Rohitmbmee]

1:39 can you please confirm that this document is only applicable to 50v or less?

[mAkills]

Here in Tamilnadu TT is used. Dangerous without RCD. Only last December 2022 EB woke up and said RCD is mandatory for new service.

[mortezsiam]

Hello sir Thank you for your teaching, I have a Sollar INverter TN 3phase 400 is it possible to change it to IT 3 phase 230*3 if yes how do I do it?Thank you

[abhiramibiju]

Which system is normally used at
our premises

[cywong]

sir, may i ask water heater can useing IT earthing system ?

[Crestpak]

How to calculate size for Earthing in TT system?
Can we change Earthing system if existing is TT

[billmichae]

Keep longer diagrams as you speak and reduce your face time.

[hejazzy]

Less movement of ur hands would be better! Not convinced by ur teaching style!