ask the electrician
Electrician Training Electrical Certification wiring recessed light fixtures Electrical Wiring Electrical Troubleshooting and Electrical Repairs wire outdoor light fixture Home Electrical Wiring Diagrams
wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet Wiring and Installing 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

Electrical Power and Panel Board Ratings

In 220volts 3 phase we see on panel board written 440volts. I’m wondering because when I counting this 3 times as equal to 660volts…

© By:

Electrical Wiring Video

Home Electrical Wiring Videos about this Topic and More

Check out my YouTube Channel, and Subscribe!

Learn more with my Home Electrical Video Course:

Basic Home Electrical Wiring by Example

Electrical Power and Panel Board Ratings
Background: Noor, a Electrician from Jalalabad, Afghanistan
[ad#block]Question: Dear sir, In 220volts 3 phase we see on panel board written 440volts. I’m wondering because when I counting this 3 times as equal to 660volts can you explain me about this why 220volts 3 phase known for440volts

Additional Comments: I like it very much because when I face trouble than i’m searching this for electrical essential.

Dave’s Reply:
Thanks for your electrical question Noor.Your calculations are logical, however incorrect. I will have to do a whole section devoted to electrical power and power transformation to explain this further.

I have provided the following links that lead to fully detailed information on this website that will assist you with your electrical question:

For more information about Repairing Electrical Wiring
Electrical Repairs

This link is helpful as a Electrician
Electrical Code Articles

Make sure not to miss these Resources for: Make Money from Home

The following may also be helpful for you:

electrical wiring book

A Complete Guide to Home Electrical Wiring

Be sure to get your copy of my BIG Book:
Perfect for Homeowners, Students and Electricians
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.

Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

More articles about Electrical, Industrial and Home Electrical Wiring:

« Previous Next »

The Mysteries of Electric Fuse Boxes

Installing X-10 Controls For Lighting

FAQs Frequently Asked Questions and Comments

2 Responses to “Electrical Power and Panel Board Ratings”
  1. Dave Rongey says:

    Hi Bill,
    Typically a problem with an electrical circuit does not damage a circuit breaker, it just causes the breaker to trip off. The circuit and the light fixture should be inspected for a faulty condition and repaired as needed. The circuit breaker should then be reset and turned back on to test the circuit for normal operation.

    I hope this helps,

  2. Bill Tench says:

    My outdoor patio lights failed. A circuit breaker in the fuse box in garage beeps. I assume I should replace this breaker. Comments as to my intended action? Thank you.