About

About T&R Electric Supply Co., Inc. About T&R Electric Supply Company T&R Electric Supply Co., Inc. buys and sells, as well as rewinds and repairs mineral oil transformers in sizes from 10 KVA to 25,000 KVA with primary voltages ranging from 2.4Kv up to 115Kv as well as regulators and high voltage switchgear. Sales and deliveries are made to municipal and industrial users all over the United States. With the nation's largest transformer inventory (60,000+), we truly are "THE TRANSFORMER PEOPLE"! We buy, sell, rent and repair transformers, along with medium and high voltage switchgear. We also have an in-house lab for full oil testing services. Field service is also now available.