Some 58,000 customers were temporarily left without power this morning when testing of the Labrador Island Link caused a trip.

NL Hydro warned that power bumps might occur as testing on the Labrador-Island Link was conducted today.

Outages started being reported at 10:00 a.m. across the island from St. John’s to Corner Brook but were quickly resolved.

Vice President of Hydro Engineering and NL System Operator, Rob Collett, says the outage occurred as they were testing a 700-megawatt load on the Labrador Island Link.

The cause of the trip is now under investigation and continued testing of the LIL, originally planned for next week, is not expected to go ahead while the probe is complete. The testing is part of the final commissioning of the Labrador Island Link.