Answer / ramesharavind s

in we throw the + wire in gnd when we find the how much
current flow in gnd wire and'll then as per ohm's law we
find the resistence of gnd.

so we always connect the +ve in gnd.

From, which load current range ( upper - lower limit current)can Air circuit breaker used for in electrical circuit.

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Dear sirs, pls check this 4-20ma to RS485 module datasheet,pls guve me some suggestions. http://www.szsunyuan.com/sy/pro_more.asp?Productid=539 Thanks. E-mail:yunianjiang99@gmail.com

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