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  1. 3tech

    508 panel 480 disconnect at machine or at power source

    All good points, thank you! jraef you are right the Mini Circuit Breaker I am using now on the 240vac unit has nothing for 480, and nothing mini about the type of circuit breaker needed including cost as I understand it the customer will need a Molded Case Circuit Breaker. What I plan to do is...
  2. 3tech

    508 panel 480 disconnect at machine or at power source

    Can I have fuses on the panel and require the customer to supply power with a shutoff switch? The panel would be 480 3 phase and controls a 3HP pump and a 25K watt heater with 24vac control circuit. Currently UL has aproved our panels 240vac with a miniture circuit breaker on the Electical...

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