The Eaton main terminal box, model 1MTB800R, is a robust solution for single-phase main service distribution. Designed for underground applications, this 800A terminal box features a durable aluminum bus and a NEMA 3R enclosure for reliable protection. It supports top or bottom feed and accommodates wire sizes up to (4) 250-500 kcmil, making it a versatile choice for various electrical installations. With UL listing, you can trust its safety and performance..This is an Eaton main terminal box, model 1MTB800R, rated for 800A and single-phase operation. It is designed for underground use and features a 3-wire configuration. The box has an aluminum bus material and a NEMA 3R enclosure. It supports both top and bottom feed types and is UL Listed. The voltage rating is 120/240V, and it can accommodate wire sizes of (4) 250-500 kcmil. The dimensions are 11.19 inches in length/depth, 47.7 inches in height, and 20.17 inches in width, with a weight of 100 lb.Feed type: Top/bottom