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The basic rating is continuous current, the value of amperes intended to flow through the device. (This is sometimes described as "operational current" or "thermal current.") When we speak of a "100 ampere fuse," for example, we mean that a load drawing 100 amperes continuous current is the maximum for which that fuse is intended to provide fault protection. How long is "continuous"? "More than three hours," according to one definition. Although we tend to think of "inductive" and "resistive" circuits as two separate entities, the distinction is only one of degree. Whether a-c or d-c, all real circuits contain both resistance and inductance. Opening a current-carrying circuit will therefore always result in an arc across the opening contacts. How intense-and therefore how damaging-that arc may be depends upon the relationship between resistance and inductance, expressed by the circuit power factor.
Wiki User
∙ 16y ago
Wiki User
∙ 11y agoWhen an electrical device is manufactured,the manufacturer gives a rated voltage and rated current.The speed obtained when the device is operated in the given rated voltage and current is known as rated speed.
Wiki User
∙ 12y agoThe maximum amperage draw or load that the device or wire can safely carry.
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When is the collector current maximum?
The maximum collector current is normally rated to be the current at which the DC current gain (hFE) falls to 50% of its maximum value. The maximum peak current is Page 2 Operation notes Transistors Rev.A 2/7 rated at a value which ensures reliability within the maximum allowed junction temperature.
What is rated normal current?
The rated current is the maximum current that can be drawn in normal continuous use, without any reduction in the lifetime of the device.
What is the Difference maximum unit current draw and nominal unit current draw?
Maximum current is defined by the rated KW of the device, say Motor. The motor may not run at its maximum rated capacity all the time. Nominal current is drawn when motor runs at nominal load.
What is the difference between rated current full load current?
rated current is the current at any given conditions......but full load current is the maximum current that the system design can hav.....it w'll b larger than that f the rated current. rated current is the current at any given conditions......but full load current is the maximum current that the system design can hav.....it w'll b larger than that f the rated current.
What is a full load current in single phase transformer?
It is the rated maximum current that can be taken from the transformer. This is equal to the VA rating divided by the output voltage. So a 6 kVA 240 v transformer would have a maximum current rating of 6000/240 or 25 amps.
When is the collector current maximum?
The maximum collector current is normally rated to be the current at which the DC current gain (hFE) falls to 50% of its maximum value. The maximum peak current is Page 2 Operation notes Transistors Rev.A 2/7 rated at a value which ensures reliability within the maximum allowed junction temperature.
What is rated normal current?
The rated current is the maximum current that can be drawn in normal continuous use, without any reduction in the lifetime of the device.
What is the Difference maximum unit current draw and nominal unit current draw?
Maximum current is defined by the rated KW of the device, say Motor. The motor may not run at its maximum rated capacity all the time. Nominal current is drawn when motor runs at nominal load.
If a centre tap transformer rated as 12V-0-12V 1Athen what will be the secondary current of that perticular transformer?
The output voltage of a transformer is not connected to the maximum rated current. You state that the transformer is rated at 12-0-12 at a current of 1A, therefore the maximum (rated) current on the secondary would be 1A. Normally, transformers are rated in VA (volt amps) which is simply voltage x current, the voltage across the two 12v terminals would be 12+12 volts, making the rating of the transformer 24VA.
What is the difference between rated current full load current?
rated current is the current at any given conditions......but full load current is the maximum current that the system design can hav.....it w'll b larger than that f the rated current. rated current is the current at any given conditions......but full load current is the maximum current that the system design can hav.....it w'll b larger than that f the rated current.
Maximum allowable current that you can put through 20 amp breaker with a continuos load?
Presumably the current it is rated at, i.e. 20 amps.
Do motors normally use the full rated current?
Motors doesn't use its maximum rated current because the circuit breaker will trip immediately or is tripped off easily if there are fluctuations in our voltage regulations.
What is meaning oof rated values of current voltage power and torque of an electrical machine?
What it means is that those rated values may not be exceeded, they are the maximum that the machine can take.
What is a full load current in single phase transformer?
It is the rated maximum current that can be taken from the transformer. This is equal to the VA rating divided by the output voltage. So a 6 kVA 240 v transformer would have a maximum current rating of 6000/240 or 25 amps.
How many amps for 14 wire how many amps for 12 wire?
#14 copper wire is rated at 15 amps, # 12 copper is rated at 20. The maximum capacity of any wire is 80% so remember to derate your current by multiplying the rated current by .8
How you calculate rated current?
Rated current is typically defined for all electric devices. Either the device has a rated current, wattage or Volt x amperes (VA). Current can be computed by dividing the wattage or VA rating by 120 volts (For resistive loads). In residential situations the maximum current is governed by the protecting breaker on a circuit. If you all up all the rated currents for devices on a circuit they should be less than or equal to 80% of the protecting breaker current rating.
How fuses are rated?
Fuses are rated by amperage (current) and voltage. The larger the current need, the larger the rating of the fuse, to handle the current. The voltage rating of a fuse defines the maximum value of circuit voltage in which the fuse can be safely used. A fuse should not be used in a circuit with a voltage exceeding the voltage rating of the fuse.
