Canadian regulators have implemented single-stock circuit breakers as part of a series of reforms to help control short-term volatility in stock prices in the wake of the “flash crash” of May 2010.
A fuse or the overcurrent trip unit of a circuit breaker must be connected in series with each ungrounded conductor [NEC Sec. 240.15(A)]. Also, the breaker must open all ungrounded conductors of the ...