插头防水问题
有很多户外带插头的灯具，例如工矿灯，路灯，泛光灯。灯具是IP65的，按如下标准要求插头也需要满足IP65，但是插头的IP等级最高就IP44，这要如何处理呢？5.2.14 If a plug is supplied with the luminaire by the manufacturer, the plug shall have thesame degree of protection against electric shock and degree of protection against ingress ofdust, solid objects and moisture as the luminaire.
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