L-L and L-N voltage

In an electrical system, there are two ways to measure voltage: line-to-line voltage and line-to-neutral voltage. Here is the difference between the two: What is line to line voltage? The LL voltage is the electrical potential difference that exists between two phases of a three-phase or two-phase system. It is measured between two conductors (or phases) of …

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Fahrenheit in celsius chart

Fahrenheit Celsius Observation -459.67°F -273.15°C Absolute zero, the coldest possible temperature -418°F -250°C Temperatures found in cryogenic applications -376°F -226.7°C Boiling point of neon -362°F -219.0°C Boiling point of hydrogen -356°F -215.6°C Boiling point of helium -320.8°F -196°C Boiling point of liquid nitrogen -297.4°F -183°C Boiling point of liquid oxygen -238°F -150°C Temperatures found in …

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Typical common efficiencies of electric motor ODP and TEFC

Typical common efficiencies of electric motor ODP and TEFC-min

NEMA Design B Electrical Motors Efficiency Electrical motors constructed according NEMA Design B must meet the efficiencies below. Power (hp) Minimum Nominal Efficiency1) 1 – 4 78.8 5 – 9 84.0 10 – 19 85.5 20 – 49 88.5 50 – 99 90.2 100 – 124 91.7 > 125 92.4 1) NEMA Design B, Single Speed 1200, …

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