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  2. Utility frequency - Wikipedia

    en.wikipedia.org/wiki/Utility_frequency

    The waveform of 230 V and 50 Hz compared with 120 V and 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user.

  3. Mains hum - Wikipedia

    en.wikipedia.org/wiki/Mains_hum

    Mains hum, electric hum, cycle hum, or power line hum is a sound associated with alternating current which is twice the frequency of the mains electricity. The fundamental frequency of this sound is usually double that of fundamental 50/60 Hz , i.e., 100/120 Hz, depending on the local power-line frequency .

  4. Mains electricity - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity

    Mains electricity or utility power, grid power, domestic power, and wall power, or, in some parts of Canada, hydro, is a general-purpose alternating-current (AC) electric power supply. It is the form of electrical power that is delivered to homes and businesses through the electrical grid in many parts of the world.

  5. Mains electricity by country - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity_by_country

    60 Hz Guernsey: G 230 V 400 V 50 Hz Guinea: C, F, K 220 V 380 V 50 Hz Guinea-Bissau: C, E, F 220 V 380 V 50 Hz Guyana: A, B, D, G 110 V 220 V [33] 190 V 60 Hz 50 Hz [33] Conversion of 50 Hz distribution to 60 Hz is ongoing. [34] Haiti: A, B 110 V 220/380 V 110/220 V 60 Hz Honduras: A, B 110 V 208 V 230 V 240 V 460 V 480 V 60 Hz

  6. Orders of magnitude (frequency) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    50 Hz: Electromagnetic – standard AC mains power (European AC, Tokyo AC), refresh rate of PAL and SECAM CRT televisions: 60 Hz: Electromagnetic – standard AC mains power (American AC, Osaka AC), refresh rate of NTSC CRT televisions and standard refresh rate of computer monitors: 10 2: 100 Hz 100 Hz

  7. How Much Money Should You Have in the Stock Market if You’re 50?

    www.aol.com/much-money-stock-market-50-180011311...

    Here’s the breakdown of what your financial portfolio should look like by age 50, according to Empower. Investors in their 50s and 60s keep between 35% and 39% of their portfolio assets in U.S ...

  8. IEC 60309 - Wikipedia

    en.wikipedia.org/wiki/IEC_60309

    The cable connectors and sockets are keyed and colour-coded, according to the voltage range and frequency used; common colours for 5060 Hz AC power are yellow for 100–130 volts, blue for 200–250 volts, and red for 380–480 volts. The blue fittings are often used for providing weather-proofed exterior sockets for outdoor apparatus.

  9. How to budget with the 50/30/20 rule: A simple, effective ...

    www.aol.com/finance/50-30-20-budgeting-rule...

    Frequently asked questions: The 50/30/20 rule and budgeting strategies. Learn more about this budgeting strategy and managing your money before integrating the 50/20/30 rule into your finances.