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50 meters distance between；
Try to choose outdoor wiring along the eaves line；
For open field must be sealed steel tubes buried cabling, grounding and steel pipe, the
absolute prohibition of the use of overhead wiring；
In areas of severe thunderstorm or high-voltage area (such as high-voltage substations),
lightning protection equipment, as well as for additional installed power must be taken
measures such as installing lightning rods
Outdoor lightning protection and grounding design of devices and circuits must be combined
with building mine requires unified consideration and in accordance with the requirements
of the relevant national standards, industry standards；
System must be equipotential earthing. Earthing system anti-interference must be met and
the dual requirements of electrical safety, and shall not be mixed with strong power network
neutral wire shorted or separately when grounding, grounding impedance less than 4 ohms,
ground wire cut-area must be not greater than 25mm2 lines shorted
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