These new rotary tap switches can be configured for manual or motor operation, and have dual (continuous/intermittent) ratings from 100/150 to 1,600/2,400 amps at 600V and come in single, two or three-phase models. The switches are made to hold up under shock and severe vibration. They have a handle that accommodates two padlocks, nonferrous parts, an escutcheon, fire-retardant nontracking insulation, low operating torque, and high-pressure line contact. Models rated for 200 or more amps have silver-plated current-carrying parts. Models rated up to 1,000 amps have glass-fiber-reinforced bases, with fabricated bases for models rated over 1,000 amps. Modifications are available such as increased voltage and amperage ratings, angled terminals, key-interlock provisions, auxiliary switches for remote indication, an "off" position, and a mechanical-release handle.
In many engineering workplaces, there’s a generational conflict between recent engineering graduates and older, more experienced engineers. However, a recent study published in the psychology journal Cognition suggests that both may have something to learn from another group: 4 year olds.
Conventional wisdom holds that MIT, Cal Tech, and Stanford are three of the country’s best undergraduate engineering schools. Unfortunately, when conventional wisdom visits the topic of best engineering schools, it too often leaves out some of the most distinguished programs that don’t happen to offer PhD-level degrees.
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