A combination of over four years of work experience in the trade and some high school, college or industry courses in insulating is usually required to be eligible for trade certification.
或者通常需要累计四年的行业内工作经验，和高中，大学或绝缘行业的课程的组合，才有资格取得行业认证。
To avoide electric shocks you should wear protective work cloth protective gloves and insulating rubber overshoes according to regulations and keep yourself dry and clean as well.
为了防止触电事故的发生，除按规定穿戴防护工作服、防护手套和绝缘胶鞋外，还应保持干燥和清洁。
Before starting any work, check the de-energized parts for presence of power and ground or short-circuit them in addition to insulating adjacent live parts and elements.
开始任何工作之前，必须检查断开的部件是否带电及接地或短接，除与绝缘体相邻的元、组件外。
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