This type of question usually means you aren't ready to do this yourself. Study some electrical material and the National Electrical Code and work this answer out for yourself.
If I were to give you...
This depends on the design of the tank for under pressure. The vaccum breaker is then sized to slightly under the design under pressure. So in this case, the vaccum breaker will open before the...
The sizing of circuit breakers is dependent on the wire size going to the load. A #14 wire is protected by a 15 amp breaker. #12 a 20 amp breaker, #10 a 30 amp breaker, #8 a 40 amp breaker and #6 a...