My 1099-R for my Roth IRA distribution shows the code " T " in box 7. What gives? Code T indicates there is no penalty because an exception applies. The distribution box (DB box) helps safely and efficiently distribute electrical power. Today, electrical systems are essential for homes and industries. A distribution board (also known as panelboard, circuit breaker panel, breaker panel, circuit breaker, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit. This publication contains the following new or updated information. 81 ft)] for standard cable lengths. 10. Understand the key differences between distribution boards and boxes—functions, applications, safety, cost, and when to use each one. Some financial companies use code T instead of code Q when reporting such distributions on Form 1099-R, but since you know that it has been more than. Distribution boards, often referred to as electrical panels or breaker boxes, serve as the nerve center of any electrical system.