A wire that came off an utility pole caused power to be cut to about 20 homes in Hamilton on Wednesday night.
The outage came as evening temperatures remained in the 80s and many residents were using air conditioning to keep cool.
The outage happened at 8:54 p.m. on Rock Maple Avenue, according to David Graves, a National Grid spokesman. Power was restored at 2:40 a.m. on Thursday, he said.
“A wire let go from the connector on the pole,” Graves said.
Rock Maple Avenue was closed by for a period of time on Wednesday night while the live wire was on the ground.
Graves said while the problem could have , it was not clear on Thursday whether Wednesday temperatures into the mid-90s caused the wire to fall.