Transformer Fence Clearance

We have a transformer in our yard. We are replacing our fence and need to know if we can install the new fence in the same place as the old one. The transformer has more than the required 8 feet in front and 3 feet on each side. However, there is only about 2 feet clearance on the back. The information on the Transformer does not address the back clearance only the front and sides.I can be reached at Thank you.