低压防爆开关的接线应注意哪些事项？
参考答案：
（1）绝缘座完整无裂纹；
（2）卡爪（或平垫圈）、弹簧垫（双帽）齐全、紧固，使用线鼻子可不用平垫圈；
（3）接线整齐，无毛刺；卡爪（或平垫圈）不压绝缘胶皮，芯线裸露距卡爪（或平垫圈）不大于10mm；
（4）两相低压导线裸露部分空气间隙，500V以下不小于6mm，500V以上不小于10mm；
（5）地线长度适宜，松开线嘴卡兰拉动电缆后，三相火线拉紧或松脱时，地线不掉。
（6）低压隔爆开关接线室不允许由电源侧进线至负荷侧接线，或由负荷侧进线至电源侧接线；
（7）接地螺栓、螺母、垫圈不允许涂绝缘物，使用扁铁的连接点及连接的卡爪（或平垫圈）要镀锌或镀锡。
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| I saw the old man, with his untidy clothes and messy hair, as he dashed between the rows of the department store. He was trying to be ordinary but he was hard not to 1 . He 2 the saleswoman and with a slight 3_, possibly German, asked where the women's shoes were sold. "Fourth floor." She responded in a voice I could hear 10 miles away. "Pardon? Where did you say they were?" he asked again, apparently 4_. Clearly the old man was somewhat 5 "Fourth floor, sir," the friendly saleswoman replied patiently, this time so _6_ that customers turned to see what was causing the _7 . I continued watching as the man thanked the saleswoman and 8 for what I assumed was the fourth floor. But rather than walk to the 9 or the lift, he dashed behind a shelf, took out a notebook and started writing hurriedly, with an almost mad 10 on his face. Then he went straight up to another saleswoman and asked where the women's shoes were sold. Again he asked her to 11 the answer and once more he walked away and took down some notes. He did this three more times before a department store 12 , thinking him mad, removed him from the store. But rather than be 13 , the old man departed with a huge smile on his face. Although the incident was 14 , it was not until a year later, during my first year of university, that I gave it any further 15_. I walked into my language classroom and met my professor. It was that very same man. | ||||
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