Panelboards are wall mounted, usually up to 1200A bus rating. Switchboard can be free stand with access from rear. Switchboard could have bus rating up to 6000A. In general switchboards are more expensive and has more features than panelboards.
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You measure voltage using a voltmeter which involves measuring the electrical potential difference between 2 points in an electrical circuit.
In an electrical power transmission system: the grid is what the feeder feed into.
Electrical is an one type of energy ie flow of electrons... this flow of electrons constitutes the Electricity which we are using for our use
Read this artical http://www.picometrix.com/pico_products/an_band_terms.asp
Electronics: The hardware of some thing electrical Electrical: To have electronics
Electrical force actually acts on electrical charges.
current is the flow of charge.
Yes, there a difference between three phase and single phase electrical supply services.
voltage
A label.
The difference between a Transistor and a Resistor is that a transistor is designed to amplify the electrical current, whereas a Resistor is designed to reduce the electrical current.
Pronunciation. An electrical circuit is the exact same as the electric system.
mechanical moves it self electrical bad noise
Expressed that way, it is somewhat confusing. The difference is how well they conduct electrical currents.
Service-Entrance switchboard has circuit breakers that sends the incoming high voltage from the transformer to different distribution switchboards around the building that goes to different power operating machines or appliances. The service Entrance switchboard have large pumping circuit breakers since it has to do with large voltage. when electricity enter the service entrance circuit breaker it is at 480V + and when it goes into the service entrance switchboard it reduces the voltage to proper voltage for the building and sends it to the distribution switchboards.
Watts are the unit for electrical power and volts are the unit for electrical voltage.