The National Electric Code, in Article 690.5, requires that any PV array installed on the roof of a dwelling must incorporate a ground-fault protection device to reduce fire hazards.

《美国国家电气法规》第690.5条规定，安装于住宅楼顶的任何光伏阵列都必须配备接地故障保护器件，以减少火灾隐患。

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This reservoir can be installed both boxes on the ground can also be installed under the ground, and do not set up over the entrance.

这样储液箱就既可以安装在地面上也可以安装在地面下，而且不用设置溢入口。

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Two imitating boards which installed on the bottom of two side of header can adjust to stubble height according to different ground condition.

割台两侧底部设置仿形板，可根据不同地面状况调整割茬。

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O. headquarters, in Geneva, and installed in an obscure office on the ground floor.

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The ground-based system offered by Gogo, which connects a Wi-Fi hot spot installed in a jet to one of 135 antennas Gogo has on the ground in North America, has been running on commercial aircraft since 2008.

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Larger flood protection doors are being installed, air vents are being moved to the roof, and electrical equipment is being repositioned on higher ground.

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