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T478.3 is a class of locomotives built for Czechoslovak State Railways to replace the most powerful steam locomotives (such as 477.0, 475.1 or 498.1) in heavy passenger and freight service. Their design is based on the type T478.1 ; the main difference is the new, more powerful V12 diesel engine.
Most modern electric heating devices use nichrome wire as the active element; the heating element, depicted on the right, uses nichrome wire supported by ceramic insulators. Alternatively, a heat pump can achieve around 150% – 600% efficiency for heating, or COP 1.5 - 6.0 Coefficient of performance , because it uses electric power only for ...
A small electric heater with one heating element can use 1 kilowatt. ... The most powerful lasers from the mid-1960s to the mid-1990s produced power in terawatts, ...
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In the United States, Underwriters Laboratories' UL 1278 [11] (for portable electric space heaters) and UL 1042 [12] standards (for portable and fixed baseboard electric heaters) certify heater safety. Although the General Services Administration had Specification W-H-193 [13] for
Electric snowblowers, though less powerful than gas-powered models, are more capable than ever. A cordless electric blower can clear a path up to 2 feet wide through as much as 20 inches of snow.
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