International Standards and Conformity Assessment for all electrical, electronic and related technologies


IEC Technical Committees & Subcommittees


About TC/SCs


Some 174 TCs (Technical Committees) and SCs (Subcommittees),and about 700 Project Teams (PT) / Maintenance Teams (MT) carry out the standards work of the IEC. These working groups are composed of people from all around the world who are experts in electrotechnology. The great majority of them come from industry, while others from commerce, government, test laboratories, research laboratories, academia and consumer groups also contribute to the work.


TCs report to the SMB (Standardization Management Board). A TC can form SCs if it finds its scope too wide to enable all the items on its work programme to be dealt with. The SCs report on their work to the parent TC. The scope (or area of activity) of each TC and SC is defined by the TC/SC itself, and then submitted to the SMB or parent TC for approval.


TC membership is composed of the IEC NCs (National Committees), all of which are free to take part in the work of any given TC, either as:

  • P-Members (Participating members)

    who have the obligation to vote at all stages and to contribute to  meetings;

  • O-Members (Observer members)
    who follow the work as an observer receiving committee documents and having the right to submit comments and to attend meetings.

IEC TCs and SCs prepare technical documents on specific subjects within their respective scopes, which are then submitted to the Full Member National Committees for vote with a view to their approval as International Standards. Distribution of documents for standards production is 100% electronic, thus improving efficiency and reducing costs.


IEC Project Committees are established by the SMB to prepare individual standards not falling within the scope of an existing technical committee or subcommittee. Project Committees are disbanded once the standard has been published.


Each National Committee of the IEC handles the participation of experts from its country. If you would like to participate in the work of an IEC TC or SC, please contact your NC. If your country is not a member of the IEC, please contact the IEC Central Office.


In all, some 10 000 experts worldwide participate in the technical work of the IEC.

Facts and Figures

IEC Experts