At 1031 an equipment malfunction at the PSEG Switching Station on Hopper Avenue cause a large fire to develop in one on the transformers on the site. WFD units responded and began precautionary evacuations of nearby homes. Approximately 40 homes were evacuated most residents took shelter with friend and relatives. The fire was finally extinguished by 6pm and residents were allowed back into their homes shortly after. There were two injuries to firefighters with one requiring hospitalization. We would like to thank the numerous fire departments that came to assist us today bringing foam reservers as far away as Clifton and Kearney.