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Philosophaie
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What is the typical Amperage that comes into a normal household?
Philosophaie said:What is the typical Amperage that comes into a normal household?
True, but AFAIK, most countries use similar supply voltages in the 220-240V range. The US uses 240V and typical amperages range from 40A for a small apartment to 200A for a medium-sized house.Studiot said:Well it depends upon the supply voltage.
There is no "typical" for industry since industrial requirements can vary by several orders of magnitude. You could see anything up to a few thousand amps at anything up to 13,200 volts. From a few kilowatts to a few dozen megawatts.Philosophaie said:How many amps tipically for an Industrial 3-phase Y and Delta?
You got me curious as I was thinking about http://en.wikipedia.org/wiki/Electric_arc_furnace" .russ_watters said:There is no "typical" for industry since industrial requirements can vary by several orders of magnitude. You could see anything up to a few thousand amps at anything up to 13,200 volts. From a few kilowatts to a few dozen megawatts.
A mid-sized modern steelmaking furnace would have a transformer rated about 60,000,000 volt-amperes (60 MVA), with a secondary voltage between 400 and 900 volts and a secondary current in excess of 44,000 amperes.
russ_watters said:True, but AFAIK, most countries use similar supply voltages in the 220-240V range. The US uses 240V
http://en.wikipedia.org/wiki/Mains_electricity#Standardization"In the United States[3] and Canada[4], national standards specify that the nominal voltage at the source should be 120 V and allow a range of 114 to 126 V (-5% to +5%). Historically 110, 115 and 117 volts have been used at different times and places in North America. Main power is sometimes spoken of as 110; however, 120 is the nominal voltage.
Borek said:Strange, I always thought it is 110/120V. That's why we here have problems with things bought in US.
So that's 120V (or in special cases 240V) at the wall, but 240V at the main electrical panel. It's nice for flexibility.turbo-1 said:The US feeds street-level transformers with high line voltages, and the transformers knock the voltage down to 240V. The secondary coils are center-tapped to provide 120V to each of the two legs at the breaker panel. We only get 240V when loads are connected leg-to-leg, like electric ranges, clothes dryers, and submersible pumps.
And generally topped out at 200 amps design rating at the main panel and breaker box. In the US, we generally have 15 amp breakers, and in bridged (240 V) breakers the total amperage is 30 amps.russ_watters said:So that's 120V (or in special cases 240V) at the wall, but 240V at the main electrical panel. It's nice for flexibility.
turbo-1 said:And generally topped out at 200 amps design rating at the main panel and breaker box. In the US, we generally have 15 amp breakers, and in bridged (240 V) breakers the total amperage is 30 amps.
Household amperage is a measure of the electrical current flowing through the circuits in your home. It is an important factor to consider because it determines the amount of power that can be safely used in your home without overloading the circuits and causing potential hazards.
Household amperage is calculated by dividing the total power (in watts) by the voltage of your home's electrical system (usually 120 volts in the United States). This will give you the total amperage available in your home.
The typical household amperage usage varies depending on the size and electrical needs of the home. On average, a typical household in the United States uses between 100 and 200 amps. However, larger homes with more appliances and electronics may require up to 400 amps.
You can determine if your household amperage is sufficient by checking the amperage rating of your circuit breaker box. If it is below the typical usage for your home, you may need to upgrade your electrical system to accommodate your household's needs.
Common household appliances and their amperage usage can vary, but here are some approximate values: