Low voltage electrical clearance is how much, high-voltage electrical clearance and how much

First of all, you have to distinguish clearly, what type of clearance, is the safety distance of the equipment without power, or the normal range of activity of the operator's work and the safety distance of the charged part of the equipment or the safety distance between the person and the electrified body with the point of operation. Secondly, you have to define the so-called low-voltage and high-voltage, according to the latest safety regulations, low-voltage definition of 1000V and below the voltage level, high-voltage refers to the voltage level of more than 1000V. Then the high voltage has to be graded, 10kV,20kV and so on. Each gap is different, if you need to know in detail, look at the "safety regulations" substation part. Or I can shoot you to see.