In recent years, on the roofs of residential buildings, commercial buildings and villas, there are rows and blocks of solar water heaters shining with silver, holding their heads in the sky, absorbing the endless solar energy, and silently serving the people Life is dedicated to warmth. However, if you are not careful, these good things may cause catastrophe.

According to the lightning protection experts of our city, in the thunderstorm weather with sparkling electric lights and thunderous thunder, improper installation of solar water heaters may become a dangerous thing that causes "thunder" to enter the room. Because it is high on the roof, and some of the previous buildings have no lightning protection facilities at all, or even if there are, they do not consider the lightning protection problem of solar water heaters. Therefore, when lightning strikes, these solar water heaters are likely to become a lightning striker. After the lightning strikes through the water heater, it will immediately go through the building along the water pipe and signal line and enter the room, which is very likely to cause harm to people's lives and property.

How to do the lightning protection work of solar water heater? The expert made three suggestions.

First, for all newly built residential buildings, in addition to the design of general lightning protection devices in accordance with the requirements of the "Code for Design of Lightning Protection of Buildings" in the design of buildings, the roof should also be adjusted according to the changes in the situation and actual needs. Some of the new facilities, such as the lightning protection of solar water heaters, are specially designed. If the solar water heater is under the protection of the designed roof lightning arrester, such as lightning rod, then just weld the metal feet of the solar water heater to the roof lightning strip or the down wire with flat steel or round steel; otherwise, A lightning rod should be set on each side of each centralized solar water heater platform, and the bottom corner of each water heater should be connected to the roof lightning protection device.

Second, for existing or previous residential buildings, where solar water heaters are installed on the roof, the property management department or the owners and residents should report to the lightning protection department for inspection and testing. If there is no lightning protection measures, the design and construction of its lightning protection system should be organized immediately; if there are certain lightning protection measures, then it is tested whether they are qualified.

Third, for users of solar water heaters, solar water heaters have not taken engineering lightning protection measures, of course, it is unsafe; the adoption of engineering lightning protection measures, can not guarantee foolproof. What users are required to do is not to use water heaters or touch other faucets and water pipes when there is lightning.