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The current rating for a circuit protective device, such as a circuit breaker or fuse, is determined by its ability to safely interrupt current flow without damage. This rating is typically specified in amperes (A) and indicates the maximum load the device can handle continuously. It's important to select a protective device with an appropriate rating to ensure safety and prevent circuit overloads. For the most accurate and current information, it's best to refer to specific manufacturer specifications or industry standards.
What else can I help you with?
Which one of the following current ratings is correct for a protective device for a nine KW shower circuit 13 a 15 a 35?
For a nine kW shower circuit, the appropriate current rating for a protective device is typically 40 A. This is calculated using the formula: Power (W) = Voltage (V) x Current (A). Assuming a standard voltage of 230 V, the current required would be approximately 39 A, so a 40 A protective device would be suitable. Thus, none of the given options (13 A, 15 A, 35 A) are correct for this application.
Why earth fault current is less than short circuit current?
A short circuit occurs when the current pass through earth directly or the current returns to its source without passing the load. It is caused by a very low or zero impedance wire that may be connected line to line or line to ground.A fault current can be a short circuit but the wire have an impedance that may still give current to the load. the protective device operates when the current exceeds the rating of circuit breaker, by load current + fault current.
What is an over-current protective device?
That is called a fuse. A fuse is a protective device, which will interrupt the flow of electricity if it is subjected to a current that is greater than its rating. Some fuses are designed to handle a large inrush of current and are used in circuits such as air conditioners, where a large amount of current is needed at startup, for a short duration and then current drops to a lower level. These are sometimes called time-lag fuses.
Where circuit breaker are used?
Circuit breakers do not use anything, they are a controlling device. They can automatically open the circuit if the current exceeds the current rating and you can manually disconnect the power from the circuit.
What is the voltage power and current rating of an integrated circuit?
What is the voltage and current of an integrated cicuit
What is the maximum current rating for the circuit breaker required for a device that operates at 20 amps?
The maximum current rating for the circuit breaker needed for a device that operates at 20 amps is 25 amps.
Which one of the following current ratings is correct for a protective device for a nine KW shower circuit 13 a 15 a 35?
For a nine kW shower circuit, the appropriate current rating for a protective device is typically 40 A. This is calculated using the formula: Power (W) = Voltage (V) x Current (A). Assuming a standard voltage of 230 V, the current required would be approximately 39 A, so a 40 A protective device would be suitable. Thus, none of the given options (13 A, 15 A, 35 A) are correct for this application.
What is the rating of a branch circuit based on?
The rating of a branch circuit is based on the maximum safe current it can handle without overheating. It is determined by the ampacity of the wires and the circuit protection device (such as a fuse or circuit breaker) installed. The rating should not be exceeded to prevent electrical hazards.
What is the term for fuse?
THis is the term. Fuse is a current sensing device that is set to open at a predetermined amount. Once current passing thru the device exceeds its rating it opens the circuit to protect the circuitry behind it.
What is the maximum current rating for the circuit breaker, rated at 150 amps?
The maximum current rating for the circuit breaker is 150 amps.
What fuse rating do you need for an 11 amp circuit?
A fuse is designed to "open" if the current exceeds the specifications of what it is protecting. I have never heard of an 11 A circuit. If you are trying to protect a device that has an 11 A rating it needs an 11 A fuse. With a lesser rating the fuse will blow whenever the current exceeds the rating and if you use a higher rating it won't protect the device. Also recognize that fuses have different response times to allow some surge current without blowing. For example a skow blow fuse will allow an over-current for a small amount of time before blowing.
Is a SCR a voltage rating device or a current rating device?
A SCR (Silicon Controlled Rectifier) is typically a current rating device. It is important to consider the maximum rated current when selecting an SCR for a specific application to ensure proper functioning and safety.
What is the maximum current rating for the 30 amp circuit breaker?
The maximum current rating for a 30 amp circuit breaker is 30 amps.
What is the maximum current rating for a 15 amp circuit breaker?
The maximum current rating for a 15 amp circuit breaker is 15 amps.
Why earth fault current is less than short circuit current?
A short circuit occurs when the current pass through earth directly or the current returns to its source without passing the load. It is caused by a very low or zero impedance wire that may be connected line to line or line to ground.A fault current can be a short circuit but the wire have an impedance that may still give current to the load. the protective device operates when the current exceeds the rating of circuit breaker, by load current + fault current.
What is an over-current protective device?
That is called a fuse. A fuse is a protective device, which will interrupt the flow of electricity if it is subjected to a current that is greater than its rating. Some fuses are designed to handle a large inrush of current and are used in circuits such as air conditioners, where a large amount of current is needed at startup, for a short duration and then current drops to a lower level. These are sometimes called time-lag fuses.
Where circuit breaker are used?
Circuit breakers do not use anything, they are a controlling device. They can automatically open the circuit if the current exceeds the current rating and you can manually disconnect the power from the circuit.
