对标准的问题
A wire-binding screw intended for the connection of an equipment-grounding conductor shallhave a green-colored head that is hexagonal-shaped, slotted, or both. A pressure wire connector intended
for connection of such a conductor shall be plainly identified, such as by being marked G, GR, GND,
Ground, Grounding, by the symbol or the like, or by a marking on a wiring diagram provided on the
heater. The wire-binding screw or pressure wire connector shall be so located that it is unlikely to be
removed during servicing of the heater and shall have upturned lugs or the equivalent to retain the
conductor.这段话怎么翻才是对的？？ 我得到了以下几点信息：
1， 对于用来加紧接地线螺丝头部应用绿色的；
2，加紧螺丝旁边应标示G, GR, GND，Ground, Grounding或接地符号；
3，这是和加热器heater有关的
求完整解释
一般UL中这种语句都是关于永久链接电源的设备。（也就是用螺丝去把电源线端子拧在供电电路中）
用作接地的螺丝应该是六角螺钉，槽头螺钉或者六角槽头螺钉，且为绿色。
用来连接此类地线的压力接线器应有"G" "GR" "GRN" "GROUND" "GROUNDING"字样或者接地标志，或者加热器电路图上提供的接地标志。此类接地螺丝或压线器所在位置应使其在加热器维修中无法被移除，应提供向上的翻边来锁住接地端子。
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