Is there a difference? If so what are the major differences. I'm supposing one would be the absence of overloads.
Reading article 695 and researching various sites on the net and I keep reading about "pump controllers". Is this a generic term for this application or would one use a combination starter.
More specifically, I have two existing motors/pumps. A 50HP will serve as the primary and run 24/7. On low pressure the second, a 100HP, will start. Upon further pressure drop a diesel back-up will start. Will conventional combination starters be suitable for this application or are there special devices for this application?
Any input welcome.
Reading article 695 and researching various sites on the net and I keep reading about "pump controllers". Is this a generic term for this application or would one use a combination starter.
More specifically, I have two existing motors/pumps. A 50HP will serve as the primary and run 24/7. On low pressure the second, a 100HP, will start. Upon further pressure drop a diesel back-up will start. Will conventional combination starters be suitable for this application or are there special devices for this application?
Any input welcome.