【Daily Topic】【Electrical Edition 20160926】
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Participation reward: 2 Wealth. Reward for correct answer: 9 Wealth. For welding grounding devices, lap welding should be used, and the lap length must meet the following requirements ( ). A. The overlap between flat bars should be 2 times the width of the flat bar, with welding carried out on no less than three sides. B. The overlap between round bars should be 4 times the diameter of the round bar, with welding performed on both sides. C. The overlap between a flat bar and a round bar should be 6 times the diameter of the round bar, with welding carried out on both sides. D. When welding a flat bar to a steel tube or to an angle bar, the weld should be made on both sides adjacent to the outer surface of the angle bar, or on 1/2 of the length of the steel tube. Correct answers: AC
A. The overlap between flat bars should be 2 times the width of the flat bar, with welding being performed on no less than three sides. C. The overlap between flat bars and round bars should be 6 times the diameter of the round bar, with welding being performed on both sides
AC、、、、、、、、、
The welding of grounding devices should employ lap welding, and the lap length must meet the requirements specified in (ABCD).