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  1. NathanHussey

    Relay Schematic Question

    Hi guys, Hoping you can help answer a simple question for me on the schematic attached/below. A1/A2 are coil inputs to the relay. 13/14, 23/24 are K1 & K2 contactors, normally open. - what is 31/32? - Why would we have both K1 & K2 contactors to single motor as shown, if they are activated by...
  2. NathanHussey

    Pourbaix diagram question

    Hi, I am confused about construction of pourbaix diagrams. Simply, why are oxidizing conditions more positive & reducing conditions more negative? Seems different to the electrochemical series, where reducing elements (or more cathodic) are more positive. Thanks in advance for your clarifications.

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