Our Low Voltage Distribution Transformers or EX Transformers are designed with DOE 2016 efficiency. We use the same conductor range for the Source and Load equipment as the tranformer. EX Transformers have separated primary and secondary terminals which are sized to handle wire range of Squiare D equipment. These transformers can be used for building management and security, data centers, networks and secure power, as well as electrical distribution. This transformer accessory is a weathershield kit for enclosures. It is used for box codes 21M.