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1 current flow tester
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Residual-current device — A two pole residual current device A Residual Current Device is a generic term covering both RCCBs and RCBOs. A Residual Current Circuit Breaker (RCCB) is an electrical wiring device that disconnects a circuit whenever it detects that the… … Wikipedia
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Ewing, Sir Alfred — ▪ British physicist born March 27, 1855, Dundee, Angus, Scot. died Jan. 7, 1935, Cambridge, Cambridgeshire, Eng. British physicist who discovered and named hysteresis, the resistance of magnetic materials to change in magnetic force.… … Universalium
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