answersLogoWhite

0

Because if the rated current is lower than the actual current, it causes resistance to the electrical flow which in turn is dispelled as heat.

User Avatar

Wiki User

14y ago

What else can I help you with?

Related Questions

Can instrument tubing be ran in cable tray?

you need cable tray rated wire to use in a cable try a cable tray is basically open to air so the current rating of the wire doesnt need to be reduced if you have more than 4 conductors cable tray rated tubing is fine( temperature flammability) steel or copper is fine.


How many amps is 6mm cable rated at?

6mm2 cable is rated at 40amps


Why is it dangerous to pass to much current through the mains cable?

Current or AMPS are what the appliance draws or load of the appliance. So, if you have a say 10,000 amps going thru a cable rated for say 1,000 amps , guess what ,the cable over heats and either will melt or at least catch fire.


Current carrying capacity of cable?

The current carrying capacity of a cable depends on factors such as its material, size, and insulation. It is typically rated in amperes (A) and indicates the maximum current that the cable can safely carry without overheating. Exceeding this rating can pose a fire hazard or damage the cable.


When is wire size an electrical hazards?

Wire size becomes an electrical hazard when it is under rated for the amount of current (Amps or I) it has to carry.Current is the flow of electrons in a circuit. If the current is too large for the cable, the cable will be subject to heating, which is a possible fire hazard.


How do you check which cable size is suitable for 4 KW motor?

Cables are rated are by the max current they can supply. To work out the current load you need to divide the Watts by the Voltage (which is either 120 or 240 depending on where you are). In the UK: 4kW/240V = 4000/240 = 16Amps, so the cable would probably be rated for 20 amps. In the US the current is 32Amps, so the cable would probably be rated for 50 amps.


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.


Can you use an existing 300 volt cable to wire in a dryer plug?

The voltage insulation rating is not the factor that cables need to determine how much current that a wire can carry. Most home wiring is rated at 300 volts. A 3C #10 cable is rated for 30 amps. This is the cable that is usually used on dryer connections.


What is the derating?

Derating factor depends on ambient temperature & how u r laying the cable ie., in Air,Duct,Burried. normally the current carring capacity of a perticular cable is calculated at 40*c, but if u lay the cable in air then it includes the temparture around it,if it increases more the 40*c then the conductor gets heated up by increasing the resistance in it thus the current carring capacity of a given cable decreases, so we will derate the cable The derating factor of induction motor is the ratio of the calculated output power to the rated power


Why we go for bus bar riser system instead of cables?

It is done to carry more current at rated power & to reduce the power loss as compared to cable since a bus-bar has more area compared to cable so resistance is less & hence losses are reduced. It is done to carry more current at rated power & to reduce the power loss as compared to cable since a bus-bar has more area compared to cable so resistance is less & hence losses are reduced.


How do you measure current flow through a 3 core cable using a ct?

To measure current flow through a 3-core cable using a current transformer (CT), you would typically clamp the CT around one of the conductors within the cable. Ensure the CT is properly rated for the expected current and that it is installed in the correct orientation. The CT will produce a proportional secondary current that can be measured with a connected ammeter or monitoring device. Ensure to account for the transformation ratio of the CT for accurate readings.


What are some well rated hotels in Cable?

Some of the best well rated hotels in Cable include the following hotels: Cable Mountain Lodge, Cable Beach Club Resort and Spa, and the Cable Car Court Hotel.