Wiring Rules
 

So looking at the electrical rules for this year, it looks like any custom circuit or relay circuit hooked up to a 20 amp breaker must use 14 awg wire, and not 18 like in previous years. It also gives specifications for smaller amperage connections, but is it possible to get smaller amperage breakers?

Re: Wiring Rules
 

Snap Action VB3 circuit breakers (see <R46>) are available in the following current ratings: 3, 4, 5, 6, 7.5, 10, 12.5, 15, 20, 25, and 30. AndyMark just so happens to carry the 5 and 10 amp versions (along with 20 and 30).