1.After replacing a faulty fluorescent ballast, how should the old one be handled?
1.更换损坏的荧光灯镇流器后,应如何处置旧的镇流器?
2.What receptacle fault occurs if the electrician swaps the green and black conductors?
2.如果电工将绿色导线与黑色导线接反,会导致插座出现什么故障?
3.When working with energized conductors, what PPE is required?
3.在处理带电导线时,需要佩戴哪些个人防护装备(PPE)?
4.During ESS testing, battery voltage and current are normal, but inverter output is low. What is the likely issue?
4.在进行储能系统(ESS)测试时,电池电压和电流均正常,但逆变器输出功率偏低。可能的问题是什么?
5.A 100 W panel at 100°F has an 89% rating factor. What is the power loss?
5.一块额定功率为 100 W 的光伏板,在 100°F 的温度下其额定系数为 89%。请问其功率损耗是多少?
6.When NM cable is run along the bottom of joists in an unfinished basement, how must it be protected?
6.当 NM 电缆敷设在未装修地下室的搁栅底部时,必须采取何种保护措施?
7.Which ladder type is safest for accessing energized rooftop equipment?
7.在检修屋顶上的带电设备时,使用哪种类型的梯子最为安全?
8.What is required to be installed on a main disconnect switch for safety?
8.为了安全起见,主断路开关上必须安装什么装置?
9.How can you verify that an AFCI device is functioning properly?
9.如何验证 AFCI(电弧故障断路器)装置是否工作正常?
10. The purpose of a GFCI device is to:
10.GFCI(接地故障断路器)装置的目的是: