Shīgōng shí yào zhùyì, bùyào pèng dào tōngdiàn de xiànlù.
Be careful during construction not to touch live wires.
Tips
usage
通电 has a secondary historical meaning: to send an open telegram (i.e., a public announcement made via telegraph), common in Republican-era Chinese political history when factions would 通电 to declare their positions publicly.