Update, January 7th, 3.50pm London: China's stock exchanges announced on Thursday evening that they would suspend use of the circuit-breakers. The securities regulator said they were not the main ...

—from an index’s recent high-water mark. And now, the Dow Jones Industrial Average, S&P 500, and Nasdaq Composite are all on the brink of entering one. Stocks sold off hard and fast on Monday, on ...

So you have power circuit breakers at your facility, and they seem to be just fine, sitting there quietly doing their job. What you may not realize is that even though your circuit breakers are ...