Electrical Knowledge Archives

Electrical Appliance Classes

July 25, 2017 by Electricalvoice

We use many electrical appliances in our houses, college, offices like a fan, heater, refrigerator, charger, vacuum cleaner, etc. Electrical Appliances are divided into certain classes according to the IEC 61140 standard and used to differentiate between the protective-earth connection requirements of devices. These are Class 0, Class I, Class II, and Class III. Fig. … Read more

Can Really Photocopying Kills a Book?

July 21, 2017 by Electricalvoice

Do you want to know if it is really possible that Photocopying Kills a Book? Strange! Yes. It is. You might have bought a new book. If you have noticed carefully, there is a message written in the book like DANGER PHOTOCOPYING KILLS THE BOOK. Actually, photocopying does not harm any book in any way. It … Read more