Item 1 of 4 Shilpen Patel plugs in his bidirectional electric Nissan Leaf, which is able to power his home and provide power back to the grid, at his house in London, …The starting point is the formula for kinetic energy: K.E. = 1/2 × m × v 2. Where: K.E. is the kinetic energy. m is the mass of the object. v is the velocity of the object. Assuming perfect conversion efficiency, the kinetic energy will equal the electrical energy (in joules), which can be related to power (P, in watts) and time (t, in ... Calculate and convert different electrical units and parameters with these online electrical calculators. You can use them to convert AMP, volt, kVA, kW, dBm, dBW, electric current, resistance, capacitance, electric charge, electric power, farad, inductance, ohm and more. Once you know all these values, the foot-candle calculator will determine how many lumens you need. We use the following equation: \text {lumens} = \text {lux} \cdot \text {area} lumens = lux ⋅ area. You can use illumination units of lux or foot candles. If you want to recalculate between these units, remember that one foot-candle equals 10. ...Use this online tool to easily calculate the electrical parameters based on two known parameters. Supports various units and formulas, including Ohm's law, Joule's law, and Ohm's law wheel.Using the formula, the electrical load can be calculated as: P = 230 V × 10 A. = 2300 W. Understanding how to calculate electrical load is crucial for anyone working with electrical systems. Armed with this knowledge and this calculator, you can now assess the electrical load of various appliances and circuits with greater accuracy and confidence.Electrical Calculation Tools. Version 5.1.0. View Update. Whether you are designing a new installation, expanding an existing one or doing maintenance, Electrical Calculation Tools is a suite of online tools for a quick Protection device Selection, Selectivity Checking and Cable Calculation. Protections.The calculator will give you the next AWG size up, as it is always better to have a thicker wire to be safe, if possible. Calculating wire sizes for three-phase AC. For a three-phase AC electrical, three cables are used instead of one. The calculator is designed to accept the total line voltage and current of the combined three cables.The Ohm's law calculator is based on the power formula together with the Ohm's Law formula. All you need to do to get the value of power is to type: Voltage …Online electrical design calculators for cables, arc flash, maximum demand, motors, tranformers, generators, etc.See full list on calculator.net Click on the appropriate electrical engineering calculator tool below to perform basic electrical engineering calculations like: short circuits, transformer fault currents, substation physical electrical clearances, cable voltage drop, power factor corrections, full motor load , conductor ampacity, grounding, lighting design, solar power systems, and more.Calculate Electricity Usage. Energy Use Calculator offers electricity usage calculators for various devices. Allowing you to calculate the electrical cost of your home appliances, and helping you save power consumption costs. To find the energy cost of your appliance, select a device from the list below. LED Light Bulb. CFL Light Bulb.Wattage in Watts / 1,000 × Hours Used × Electricity Price per kWh = Cost of Electricity. So, for example, if we have a 40 W lightbulb left on for 12 hours a day and electricity costs $.15 per kilowatt-hour, the calculation is: 40 watts / 1,000 × 12 hours × $.15/kWh = $.072. This electricity cost calculator works out how much electricity a ...Electricity Bill Calculator UK. Welcome to Electricity Bill Calculator UK. We are the leading online energy bill calculator to work out electricity cost and estimate KWh usage from meter readings or a recent utility bill from your energy supplier. Enter your previous and current meter readings below and click the ‘Calculate’ button to get an advanced …Find Electrical Engineering Calculator at CalcTown. Use our free online app Electrical Engineering Calculator to determine all important calculations with parameters and constants.Electricity Bill Calculator UK. Welcome to Electricity Bill Calculator UK. We are the leading online energy bill calculator to work out electricity cost and estimate KWh usage from meter readings or a recent utility bill from your energy supplier. Enter your previous and current meter readings below and click the ‘Calculate’ button to get an advanced …Electrical Calculators Org. Search for: Hydroelectric Power Calculator – Hydro Power Plant Formula Equation Calculator. Hydroelectric Power Calculator is a useful online calculation tool used to calculate the power generated in kilowatts and megawatts from the known values of density in kg/m 3, ...Electricity Calculator. Use the calculator below to estimate electricity usage and cost based on the power requirements and usage of appliances. The amount of time and power that each appliance is used varies significantly between households, so for the best results, adjust the usage for each appliance to … See more The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times the number of usage hours per day t divided by 1000 watts per kilowatt: E(kWh/day) = P(W) × t(h/day) / 1000 (W/kW) Estimate and manage your power usage with our Energy Consumption Calculator. Easily calculate electricity costs, understand energy efficiency ... Circuit breakers breaking capacity is the rated RMS value of current that a CB can break at the rated voltage. List of Contents Calculator Formula Breaking capacity (B.C) = 1.732 * V * I * 10-6 Where 1.732 = √3 represents a multiplier for three phase circuits B.C is always expressed in terms of MVA. Where … Online Calculators - RapidTables.info. Online Calculators. Access a versatile and convenient online calculator for quick and accurate calculations. Perform a wide range of mathematical tasks with ease using our user-friendly and efficient online calculator tool. For three-phase circuits where you know the current, line-to-line RMS voltage, and power factor, the formula to calculate watts is: P (W) = I (A) × V L-L (V) × PF × √3. The power P in watts is equal to the product of the current I in amps, the line-to-line voltage V in volts, the power factor PF, and the square root of 3. Ohm's law calculation formula. The current I in amps (A) is equal to the voltage V in volts (V) divided by the resistance R in ohms (Ω): I =. VR. Example. I =. 20V. 10Ω = 2A. The power P in watts (W) is equal to the voltage V in volts (V) times the current I in amps (A): Feb 1, 2016 · Our appliance and electronic energy use calculator allows you to estimate your annual energy use and cost to operate specific products. The wattage values provided are samples only; actual wattage of products varies depending on product age and features. Enter a wattage value for your own product for the most accurate estimate. Wattage and ... Item 1 of 4 Shilpen Patel plugs in his bidirectional electric Nissan Leaf, which is able to power his home and provide power back to the grid, at his house in London, … E = P t E = P t. Where: E = Energy dissipated in a resistive element in joules. P = Power dissipated in a resistive element in watts. t = The duration of time the energy was dissipated in seconds. By definition 1 watt = 1 joule per second (1 W = 1 J/s). Similarly, you can flip that equation around and it becomes 1 joule = 1 watt for 1 second (1 ... How to Calculate Electric Current. In an electrical circuit, current is a measure of the flow of charged particles moving through a conductor. Current is measured in units of amperes (usually referred to as amps).. You can calculate the current flowing through a conductor using Ohm’s Law, which states that the current through a circuit element is directly …Our appliance and electronic energy use calculator allows you to estimate your annual energy use and cost to operate specific products. The wattage values provided are samples only; actual wattage of products varies depending on product age and features. Enter a wattage value for your own product for the most accurate estimate. Wattage and ...Electricity Cost Calculator UK: Prices based on the new Energy Price Cap (October 2022). Electricity Consumption in Kilowatt Hours (kWhs): *. The average UK electricity bill is 2,900 kWh of electricity each year. Cost of Electricity (In Great British Pounds (£)): This figure is based on the latest Energy Price Cap*.The electrical calculation app contains all types of information that electrical engineers require, like electrical formulas for voltage, current, and efficiency, all available in the electrical calculation app. We can use an electrical calculator that makes sure to calculate the particular electrical quantities. Using an electronic calculator ...The flow of electric charge Q is referred to as an electric current I. The amount of charge per unit time is the change in electric current. A current flows at a constant value I. during the time t, it transports the charge Q = I × t. For a temporally constant power, the relationship between the charge and current: I = Q / t or Q = I × t. Energy Usage Calculation Formula. To calculate energy consumption follow this simple formula. Energy (E) in kilowatt-hours (kWh) is equal to the power (P) in watts (W) multiplied by the number of hours used (t) per day divided by 1,000 watts per kilowatt. E(kWh/day) = P(W) × t(h/day) / 1000(W/kW) The cable size results for International standard cable are calculated from IEC 60364-5-52: Low Voltage Electrical Installations, selection and erection of electrical equipment – Wiring systems and are based on 230V and 415V voltage drop. In both BS and IEC calculations, the KW calculation is based on a power factor of 0.8.Electricity Calculator. Use the calculator below to estimate electricity usage and cost based on the power requirements and usage of appliances. The amount of time and power that each appliance is used varies significantly between households, so for the best results, adjust the usage for each appliance to … See moreWhat are Electrical Calculations. Electrical calculations involve mathematical computations that are crucial in the field of electrical engineering. They are used in the design, installation, operation, and maintenance of electrical systems. Online electrical design calculators for cables, arc flash, maximum demand, motors, tranformers, generators, etc. For three-phase circuits where you know the current, line-to-line RMS voltage, and power factor, the formula to calculate watts is: P (W) = I (A) × V L-L (V) × PF × √3. The power P in watts is equal to the product of the current I in amps, the line-to-line voltage V in volts, the power factor PF, and the square root of 3. With over 3,000 calculators, Inch Calculator is one of the largest and most trusted sites for calculations in math & science education, construction planning, electrical engineering, health & fitness, finance, automotive, and several other fields.This calculator determines minimum cable size using the method described by the British Standard BS7671 – 18th Edition – IET Wiring Regulations which is the national standard in the United Kingdom for electrical installation and the safety of electrical wiring.. This is a simple calculator which ignores cable operating temperature and short-circuit rating.The Watt calculator finds the electrical power of a circuit using the given values. Electrical power is given by. P = V ⋅ I P = Electrical power V = Voltage I = Current. Step 2: Click the blue arrow to submit. Choose "Find the Power" from the topic selector and click to see the result in our Physics Calculator! Examples: Find the PowerWith over 3,000 calculators, Inch Calculator is one of the largest and most trusted sites for calculations in math & science education, construction planning, electrical engineering, health & fitness, finance, automotive, and several other fields. The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times the number of usage hours per day t divided by 1000 watts per kilowatt: E(kWh/day) = P(W) × t(h/day) / 1000 (W/kW) Estimate and manage your power usage with our Energy Consumption Calculator. Easily calculate electricity costs, understand energy efficiency ... Desk Calculator 12 Digit Extra Large 4.3-Inch LCD Display, Two Way Power Battery and Solar Calculators Desktop, Big Buttons Easy to Press Used as Office Calculators for Desk. 4.4 out of 5 stars. 2,191. 1K+ bought in past month. $13.99 $ 13. 99. 5% coupon applied at checkout Save 5% with coupon.Find Electrical Engineering Calculator at CalcTown. Use our free online app Electrical Engineering Calculator to determine all important calculations with parameters and constants. Calculate and convert different electrical units and parameters with these online electrical calculators. You can use them to convert AMP, volt, kVA, kW, dBm, dBW, electric current, resistance, capacitance, electric charge, electric power, farad, inductance, ohm and more. 2. Commercial: Avg. electricity bill is Rs. 10 to 20 per units including all charges. Note: The accuracy rate of this calculator is up to 95%, we are working on it to improve it's accuracy rate. If you have any specific query, you can contact with support team via email: [email protected] or call: 8750 77 88 00.ah to kwh calculator. Amp hours to Watt Hours. Amps to KVA Calculator. Amps to Kilowatts Calculator. Free online electrical and electronic calculator and electrical conversion calculator. Energy Usage Calculation Formula. To calculate energy consumption follow this simple formula. Energy (E) in kilowatt-hours (kWh) is equal to the power (P) in watts (W) multiplied by the number of hours used (t) per day divided by 1,000 watts per kilowatt. E(kWh/day) = P(W) × t(h/day) / 1000(W/kW) Desk Calculator 12 Digit Extra Large 4.3-Inch LCD Display, Two Way Power Battery and Solar Calculators Desktop, Big Buttons Easy to Press Used as Office Calculators for Desk. 4.4 out of 5 stars. 2,191. 1K+ bought in past month. $13.99 $ 13. 99. 5% coupon applied at checkout Save 5% with coupon.Electrical Formulas helps us to calculate the parameters related to electricals in any electrical components. Solved Examples. Example 1: A wire carrying a current of 4 Amperes is having a resistance of 5 \(\begin{array}{l}\omega\end{array} \). Calculate the potential difference across its ends.Desk Calculator 12 Digit Extra Large 4.3-Inch LCD Display, Two Way Power Battery and Solar Calculators Desktop, Big Buttons Easy to Press Used as Office Calculators for Desk. 4.4 out of 5 stars. 2,191. 1K+ bought in past month. $13.99 $ 13. 99. 5% coupon applied at checkout Save 5% with coupon.Electricity Bill Chart 2023. Latest and updated electricity tariff rate (Effective from March 2023) This chart data is issued by Ministry of Power Energy and Mineral Resources of Bangladesh. Official Link To Tariff Last Updated - …This calculation does not take into account rebates, discounts, or special tariff incentives such as Off Peak Tariff Ride (OPTR), Sunday Tariff Rider (STR) etc. 4. Service Tax (ST) at the rate of 8% will be charged in TNB electricity bills for Residential Customer with consumption more than 600 kWh effective from 1st March 2024. For three-phase circuits where you know the current, line-to-line RMS voltage, and power factor, the formula to calculate watts is: P (W) = I (A) × V L-L (V) × PF × √3. The power P in watts is equal to the product of the current I in amps, the line-to-line voltage V in volts, the power factor PF, and the square root of 3. Dec 22, 2023 · To manually calculate your power consumption, use this formula: Calculate the watts your devices and appliances use per day. Add up the total amount of watts. Convert the watts to kilowatts. There are 1,000 watts in one kilowatt. Estimate the cost by multiplying monthly kilowatts by your electric rate. The radius of the atomic nucleus. Einstein's equation E = mc². Photon mass. Planck's Relation. Photoelectric Effect. Fermi–Dirac statistics. Use our Electric Power Calculator to quickly and easily calculate power consumption, voltage, current, and resistance in electrical circuits for improved energy efficiency and performance. Learn the Power Formula. We’ve seen the formula for determining the power in an electric circuit: by multiplying the voltage in “volts” by the current in “amps” we arrive at an answer in “watts.” Let’s apply this to a circuit example: How to Use Ohm’s Law to Determine Current. In the above circuit, we know we have a battery voltage of 18 volts and a lamp …How do you calculate the weight of an electrical cable? The weight of an electrical cable can be calculated by multiplying the length of the cable (in feet) by its weight per foot. How much does 10 gauge wire weigh per foot? A rough estimate for 10-gauge wire is around 0.05 pounds per foot. The Electrical Consumption Calculator calculates the amount of energy used on a list of appliances, and the cost of electricity used per appliance (if the price per kWh (kiloWatt-hours) is entered), additional information and tips on reducing your energy consumption are available below the calculator. Please provide a rating, it takes seconds ... This could cause the plug in the wall socket to overheat and possibly cause a fire. Use our overload calculator (below) to check if you’re exceeding the maximum load. The Socket Calculator has been brought to you by Electrical Safety First. For more safety information visit https://www.electricalsafetyfirst.org.uk.Kilowatt-hours are the standard units of energy used by the electricity meter in our homes to calculate the amount of electrical energy we use and therefore how much we pay. So if you switch ON an electric fire with a heating element rated at 1000 watts and left it on for 1 hour you will have consumed 1 kWhr of electricity. If you switched on ...See full list on calculator.net The cable size results for International standard cable are calculated from IEC 60364-5-52: Low Voltage Electrical Installations, selection and erection of electrical equipment – Wiring systems and are based on 230V and 415V voltage drop. In both BS and IEC calculations, the KW calculation is based on a power factor of 0.8.Our appliance and electronic energy use calculator allows you to estimate your annual energy use and cost to operate specific products. The wattage values provided are samples only; actual wattage of products varies depending on product age and features. Enter a wattage value for your own product for the most accurate estimate. Wattage and ...Add in the wattage of all permanent appliances, such as washer/dryer, electric range, or water heaters. Subtract 10,000 & multiply this number by .40. Add 10,000. Add the wattage of your AC or heating appliances (furnace + space heaters), whichever is greater – Don’t add both! Divide by 240.See full list on calculator.net This package was selected based on your energy needs. Please Complete Step 1. Step 3: Order Your Custom Power Station On The Next Page! Plug in your power requirements and the power calculator will help you estimate how much battery capacity you need for van life. Use this calculator to estimate your needs for a DIY campervan electrical system.The radius of the atomic nucleus. Einstein's equation E = mc². Photon mass. Planck's Relation. Photoelectric Effect. Fermi–Dirac statistics. Use our Electric Power Calculator to quickly and easily calculate power consumption, voltage, current, and resistance in electrical circuits for improved energy efficiency and performance.{{ metatags.description }}Electrical and Electronics Calculators. These electrical and electronics engineering calculators are to help electronics/circuit designers to solve complex equations and calculations quickly. LC Tank Circuit Resonance Calculator. Resistor Wattage Calculator. Bitwise Calculator.Online electrical calculators for calculations of electricity and electronics. Amps to kW calculator. Amps to kVA calculator. Amps to VA calculator. Amps to volts calculator. …To convert amps (electrical current) to watts (electrical power) at a fixed voltage, you can use the equation: watts = amps × volts. Simply multiply your amps figure by the voltage. Example calculations. 15 amps × 120 volts = 1800 watts; 20 amps × 120 volts = 2400 watts Calculate and convert different electrical units and parameters with these online electrical calculators. You can use them to convert AMP, volt, kVA, kW, dBm, dBW, electric current, resistance, capacitance, electric charge, electric power, farad, inductance, ohm and more. The starting point is the formula for kinetic energy: K.E. = 1/2 × m × v 2. Where: K.E. is the kinetic energy. m is the mass of the object. v is the velocity of the object. Assuming perfect conversion efficiency, the kinetic energy will equal the electrical energy (in joules), which can be related to power (P, in watts) and time (t, in ...{{ metatags.description }}The application of this calculator (Figure 1) is for determining power loss across resistive circuit elements in a simple electrical system. This calculator may be useful when calculating total system power loss and when trying to understand voltages and currents at different nodes within a circuit. Figure 1.My Electrical Calculator is a free educational and reference Android application developed by Sparkle Solutions. This app contains 45 calculators that can calculate various electrical parameters quickly and easily. It offers automatic calculations and conversions with every unit and value change. The calculated values and results can …The Watt calculator finds the electrical power of a circuit using the given values. Electrical power is given by. P = V ⋅ I P = Electrical power V = Voltage I = Current. Step 2: Click the blue arrow to submit. Choose "Find the Power" from the topic selector and click to see the result in our Physics Calculator! Examples: Find the PowerWelcome to CALCULATOR EDGE, an online FREE Engineering Calculators for Engineers and Students worldwide, Our website features more than few hundred calculators for …This calculation does not take into account rebates, discounts, or special tariff incentives such as Off Peak Tariff Ride (OPTR), Sunday Tariff Rider (STR) etc. 4. Service Tax (ST) at the rate of 8% will be charged in TNB electricity bills for Residential Customer with consumption more than 600 kWh effective from 1st March 2024.This could cause the plug in the wall socket to overheat and possibly cause a fire. Use our overload calculator (below) to check if you’re exceeding the maximum load. The Socket Calculator has been brought to you by Electrical Safety First. For more safety information visit https://www.electricalsafetyfirst.org.uk.This online electrical calculator assists in identifying the appropriate gauge or size of copper or aluminum wires necessary for an electrical circuit. Cable Size formula. Single Phase. Wire Circular Mils = 2 x Specific Resistance x Amperes x Distance / (Voltage Drop / Source Voltage) Three PhaseItem 1 of 4 Shilpen Patel plugs in his bidirectional electric Nissan Leaf, which is able to power his home and provide power back to the grid, at his house in London, …These electrical and electronics engineering calculators are to help electronics/circuit designers to solve complex equations and calculations quickly. LC Tank Circuit …Voltage Drop Calculator. This application, revised to meet 2020 NEC and 2021 CEC, provides voltage drop calculations in accordance with the US National Electrical Code Tables 9 and 8 for AC and DC feeders. Colour coding of maximum allowable ampacity (at different ambient temperatures) in accordance with US and Canadian codes - helps …Compare loft insulation and cavity wall insulation with us to get up to four, free no-obligation quotes to compare prices and find the best deal for you. *£390 savings a year figure is for 1940's 3 bed semi-detached home with a ten-year-old gas boiler and a gas price of 3.73p/kWh, when cavity wall insulation and loft insulation are installed.
Electricity Calculator. Use the calculator below to estimate electricity usage and cost based on the power requirements and usage of appliances. The amount of time and power that each appliance is used varies significantly between households, so for the best results, adjust the usage for each appliance to … See more. Oak to san diego
Electrical Formulas helps us to calculate the parameters related to electricals in any electrical components. Solved Examples. Example 1: A wire carrying a current of 4 Amperes is having a resistance of 5 \(\begin{array}{l}\omega\end{array} \). Calculate the potential difference across its ends.Our appliance and electronic energy use calculator allows you to estimate your annual energy use and cost to operate specific products. The wattage values provided are samples only; actual wattage of products varies depending on product age and features. Enter a wattage value for your own product for the most accurate estimate. Wattage and ...online calculator for electronics and electrical calculation need. In this site you can find electronics calculator to use such as Ohm's law calculator that calculate Power (P), …Voltage Drop Calculator. This is a calculator for the estimation of the voltage drop of an electrical circuit. The "NEC data" tab calculates based on the resistance and reactance data from the National Electrical Code (NEC). The "Estimated resistance" tab calculates based on the resistance data estimated from the wire size.The radius of the atomic nucleus. Einstein's equation E = mc². Photon mass. Planck's Relation. Photoelectric Effect. Fermi–Dirac statistics. Use our Electric Power Calculator to quickly and easily calculate power consumption, voltage, current, and resistance in electrical circuits for improved energy efficiency and performance.According to Ohm's Law, power can also be calculated using P = I 2R P = I 2 R or P = V 2 R P = V 2 R. This is why electrical power transmission lines use higher voltages because it will result in less power loss due to heating. Another application is found in a common kitchen appliance: the toaster. Toasters heat bread by passing current to a ...💡 With our kVA calculator, you can calculate multiple setups in no time. If you have the value for the power factor and want to find the electrical system's real power output, tick on the Display power factor and real power checkbox of our kVA calculator to show the kVA to kW calculator.Once you're there, simply input the needed values to …Electrical power is the transfer rate of electrical energy per time unit. We denote the electrical power by P P P, and its unit is the watt (W) or joules per second (J/s). The power needed by home appliances generally ranges from 10 W (an LED light bulb) to over 3 kW (hair dryers or electric heaters). Let's now see how to calculate electrical ... Energy Use Calculator provides free energy usage calculators to find the electricity consumption of your devices. We cover most electrical devices and home appliances, our online calculators can be edited to fit any home appliance and accurately calculate power costs. Get Started. Top 5 reasons to use our services: For example, let’s calculate the wire size of a 100-meter-long copper wire for a single-phase circuit when it must supply 30 amps of current with a 10 V voltage drop allowed: A (mm²) = 2 × 1.7241×10-8 Ω·m × 100 m × 30 A / 10 V × 1,000,000 A (mm²) = 10.3446×10-6 m² × 1,000,000 A (mm²) = 10.3446 mm². By comparing the size to the list of AWG wire sizes in …Kilowatt-hours are the standard units of energy used by the electricity meter in our homes to calculate the amount of electrical energy we use and therefore how much we pay. So if you switch ON an electric fire with a heating element rated at 1000 watts and left it on for 1 hour you will have consumed 1 kWhr of electricity. If you switched on ... Online Calculators - RapidTables.info. Online Calculators. Access a versatile and convenient online calculator for quick and accurate calculations. Perform a wide range of mathematical tasks with ease using our user-friendly and efficient online calculator tool. Electrical calculators are a collection of online tools that perform common electricalal calculations, such as converting between watts, volts, and amps; sizing wires and cables; and calculating voltage drop. These calculators can be used by electricalians, engineers, and homeowners alike to quickly and accurately solve electricalal problems. Energy Usage Calculation Formula. To calculate energy consumption follow this simple formula. Energy (E) in kilowatt-hours (kWh) is equal to the power (P) in watts (W) multiplied by the number of hours used (t) per day divided by 1,000 watts per kilowatt. E(kWh/day) = P(W) × t(h/day) / 1000(W/kW) The cable size results for International standard cable are calculated from IEC 60364-5-52: Low Voltage Electrical Installations, selection and erection of electrical equipment – Wiring systems and are based on 230V and 415V voltage drop. In both BS and IEC calculations, the KW calculation is based on a power factor of 0.8.Please specify the relay device settings and fault current to draw the time current curve and get the corresponding tripping time based on either IEC, IEEE, IAC or RI equations. Relay pickup current (A) Fault current (A) Time multiplier (TMS) / Time dial setting (TDS) Select curve equation. IEC Standard 60255.Electrical Calculation Tools. Version 5.1.0. View Update. Whether you are designing a new installation, expanding an existing one or doing maintenance, Electrical Calculation Tools is a suite of online tools for a quick Protection device Selection, Selectivity Checking and Cable Calculation. Protections.Inductive Reactance from Inductance Calculator. Note: Formulas and equations for this calculator is given below (right after calculator). Enter the values of Frequency & Inductance and click on Calculate. Result will display the calculated value of … To calculate the cost of powering our toaster, we multiply the 0.15 kWh-per-day figure by our energy cost per kWh. For our example, we'll say that our electricity provider charges us $0.20 (20 cents) per kWh. 0.15 × $0.20 = $0.03. So, we've calculated that the toaster is costing you 3 cents per day in electricity. Electrical calculators are a collection of online tools that perform common electricalal calculations, such as converting between watts, volts, and amps; sizing wires and cables; and calculating voltage drop. These calculators can be used by electricalians, engineers, and homeowners alike to quickly and accurately solve electricalal problems. .