As we known when working on electrical installations, safety matter is our priority.Every step we need to consider about hazards when perform electrical works.
Only competent electrician can work on electrical installation or live condition according to relevant industrial safety standards.Common industrial safety standard for electrical works such as VDE 0105 for Germany, and international standards for EN 50110 or IEC 60364.
For electrician,they need to special tools which have been tested and qualified with electrical standard.Hand tools also must suitable and followed the electrical standard IEC 60900 and it has specified worldwide requirements for tools for electrical live condition.