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wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet How to Installing and Wire Ceiling Fans and Remote Controls wire dimmer switch wiring diagrams for switches wiring a dryer cord and 220 outlet circuit breaker panel
Electrical Wire and Cable

Ohms Law Formula

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Summary: Ohms Law Formula and how it is used for determining electrical loads as it pertains to Watts, Volts and Amps. Ohms Law is very helpful to help us understand sizing electrical circuits for the home electrical system.


Check Out What Others Are Sharing at Ask the Electrician:
It is a very nice site with allot of useful information. Steve from Pittsburgh, Pennsylvania


Basic Ohms Law Formula for Electrical Wiring Calculations



Electrical Wiring Video

Install a Generator Interlock Switch

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The Ohm's Law Calculations for Electrical

Using the Ohm's Law is a way to determine information needed to understand how to design electrical circuits.

This formula works with three main variables and depending on what is known can produce a missing factor which is needed to determine the circuit size.

The Ohm's Law is also used when designing appliances and building electrical equipment and devices.


Microwave Oven Circuit Example:
A Microwave Oven circuit 
Circuit Planning:

Device ________________

Volts _________________

Amps ________________

Quantity ______________

Circuit Size Amps ______

Wire Size ____________

See the Wire Size Chart

Ohms Law Formula to Convert Watts:
(calculating watts to amps)

Watts / Volts x Quantity = *Total Amps.

* Note: This does not include Power Factor or Voltage Drop (wire distance).

Knowing the specified circuit size as amps will not require the Ohms Law Calculation.



Understanding Electrical Equipment and Appliance Labels

Microwave Oven
Electrical Appliance Label


Electrical Calculations and Formulas


Electrical Calculations and Formulas


Electrical Projects Guidelines




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Converting Watts to Kilowatt/hours


Question:
Can you tell me how to convert watts to kilowatt/hours?

Dave's Answer:
Kilowatts represents 1000 watts, so 6000 watts is the same as 6 kw.

Based on this, if 6000 watts of power were consumed for one hour then that would be 6000 watts per hour.

A watt hour meter measures how many watts of power are consumed per hour. Electrical utility bills often include the peak demand period, which is the highest amount of electricity that is consumed in one hour. If this high demand of electricity is during the peak demand period of the day then this may have an effect on the electrical utility bill causing it to be more expensive. If a high amount of electricity is consumed during non-peak demand periods during the day then the electrical billing may not be as costly.

Home Electrical Wiring

Wire a GFCI Outlet without a Ground Wire

Helping You Wire it Right

NOTE: A List of All my Helpful Videos
Will Display at the End of This Video
So Keep Watching So I Can Help You Wire it Right!

Check out my YouTube Channel:
» AskTheElectrician «
and Subscribe!


Learn more about Home Electrical Wiring
with my online Video Course:
Basic Home Electrical Wiring by Example


Be sure to get your copy of my BIG New eBook:

Complete Guide to Home Electrical Wiring


Wire It Right with the help of my Illustrated Wiring Book
Great for any Home Wiring Project.


See How to Wire it Right!

Learn more about Residential House Wiring
Perfect for Homeowners, Students and Electricians
Includes:
Home Electrical Wiring - Room by Room
120 Volt Circuits
240 Volt Circuits
Multi-Wired Circuits
Wiring Methods for Installing Home Electrical Circuit Wiring
Electrical Codes for Home Electrical Wiring
....and much more.

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Electrical Tips to Help You Wire it Right

The Safest Way to Test Electrical Devices and Identify Electric Wires!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.

The Quickest Way to Check for Faulty Electrical Wiring!

The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use.

Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!

The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..

The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.





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What is the formula for the computations of main wire?
The electrical loads have much to do with the design of the main wire and main switch.....

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