EDISON, N.J. (CBSNewYork) –– Power has been restored to thousands of customers in central New Jersey after a massive fire ripped through a PSE&G substation in Edison on Tuesday afternoon.

About 9,500 customers in Edison and Metuchen were without power as a result of the explosion and fire. Firefighters eventually got the blaze under control and by 10:30 p.m. all power had been restored.

CBS 2’s Joe Biermann reported from Chopper 2-HD, saying that flames could be seen about 30 to 40 feet in the air.  PSE&G confirmed that a transformer explosion caused the fire.

The station was not staffed and there were no injuries as a result of the incident.

Firefighters had to exercise caution in putting out the fire because of its proximity to other electrical equipment.  They used foam to help extinguish the flames.

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