Measurement of the laboratory grounding resistance of the instrument should be how many ohms laboratory is used

Generally speaking, the machine lightning according to the requirements of GB to do, the general requirements of 4 ohms, but if the machine has special equipment, according to the minimum grounding resistance requirements of the equipment to do. Hardware class are generally on the hard city to see there more professional, professional problem professional solution, this is the fastest and the best way, better than their own blind, because the electronic components of the electronic model those are too many accidentally get it wrong, so it is better to find a professional to help you solve.