What are power districts and do I need them?
A power district is a section of track that is powered separately from other sections of track on a layout. How many power districts you have usually depends on the size of the layout. For larger layouts some power districts may have additional power boosters if they are a long way from the main power supply. Even on a small layout, though, you might want (or need) more than one power district. Separating a layout into power districts means that if one section becomes inoperable for some reason (like a short circuit, for instance) the rest of the layout will keep functioning. It is possible to have a number of power districts using only one power supply. There are a number of circuit breakers available on the market from a range of different manufacturers so choose the one thatmost closely fits your own requirements.