整个electrical trouble shooting tool
红圈画的那个,往里一插就知道哪里不对了。“诸葛”大概说的对,可能是open ground or open neutral
如果是 GFCI or AFCI tripped, 火线就没电了

https://www.amazon.com/gp/product/B07HHTDVMR/ref=s9_acsd_cdeal_hd_bw_b24rI_c_x_w?
红圈画的那个,往里一插就知道哪里不对了。“诸葛”大概说的对,可能是open ground or open neutral
如果是 GFCI or AFCI tripped, 火线就没电了

https://www.amazon.com/gp/product/B07HHTDVMR/ref=s9_acsd_cdeal_hd_bw_b24rI_c_x_w?