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The larger the number of the wire, the smaller the amperage that it can carry using the AWG wire identification system.
In the electrical trade the smallest building conductor that can be used is a #14 copper conductor with an insulation rating of 90 degrees C and is rated at 15 amps.
The largest building conductors that can be used is a 200 MCM copper conductor with an insulation rating of 90 degrees C and is rated at 750 amps.
The above ratings are for allowable ampacities for not more than three copper conductors in raceway. For amperages higher than 750 amps the conductors then become paralleled, tripled and quadrupled.
There are other ratings for conductors such as free air rating (question for another day) but these are the ones used by electricians on a daily basis
Wiki User
∙ 8y ago
Wiki User
∙ 11y agoThe larger the number of the wire, the smaller the amperage that it can carry using the AWG wire identification system.
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Why insulation is needed on current carrying conductors?
To prevent the wire from getting short circuited to ground or even to other wires.
Is the neutral conductor of a two wire single phase circuit considered a current carrying conductor?
Sure. In a two-wire circuit, both wires carry equal currents.
A break in the wires of an electric current will the circuit and the current?
A break in the wires of an electric current will break or cut the circuit and stop the current from flowing.
Does a GFCI give over-current protection?
GFCI stands for ground fault circuit interruptor. It inherently works by detecting ground current; when ground current is detected above a low threshold, the GFCI will trip. Some GFCIs also may provide phase overcurrent protection (such as the two phase wires being shorted together) as well. *************************************************************** It is a differential current detector. The line (or live, phase or hot) and the neutral wires of an a.c. supply should both be carrying the same value of current. (The current comes from the generator and goes to the load through the line and neutral wires and goes back to the generator.) If there is a difference in the in the two wires, it can only be because there is a fault which has allowed some current to flow to Earth ("ground"). As long as the two currents are equal, the interruptor stays closed. Once an imbalance is detected, the interruptor operates and disconnects the supply.
How do you wire a 220v dryer to run on 110?
You can't. A 220 volt dryer requires 220 volts in order to operate properly. It will not run on 110 volts.
What affects a wires electron flow?
The size of the conductor is in direct relation ship to its rating capacity of carrying a current. The larger the diameter of the conductor the larger the amperage rating capacity of the conductor.
What is a current-carrying coil of wires with many loops?
solenoid
Why current carrying wires become hot?
Resistance. Need larger gage wire
Why dont phase and neutral exchange?
Phase wires are "hot" wires and are the current-carrying conductors. (These are the wires that will shock you if you touch them.). The neutral wire is basically there to carry the electricity back to the source. It is not normally considered current-carrying. If you switch these two wires, you might energize the metal of equipment, causing a dangerous shock hazard.
How do you calculate current capacity of wire?
Current capacities of wires are normally not calculated. An electrician would normally refer to the allowable ampacities of wires in the (2011) NEC Table 310.15(B)(series) and 310.60(C)(series). Ampacity ratings are provided for a number of situations. If you want to use that math used to derive the figures for the tables... The current carrying capacity (in amps): I = 106 x D2/700 (cross-sectional area is 700 mils per amp)
What happens to two parallel wires carrying electric current in opposite directions?
repel each other
When a graphic is a depiction of something real?
The graphic in the related link depicts the fields around wires carrying current. The current is real and the fields are also.
Why insulation is needed on current carrying conductors?
To prevent the wire from getting short circuited to ground or even to other wires.
Why you use ac for transmission?
AC is used for transmission because AC can be stepped up in voltage with a transformer, and then stepped back down at the destination. Since power is voltage times current, a higher voltage requires a smaller current to achieve the same power. Since the current carrying capacity of wires is based on wire size, a smaller wire size can be used to transmit the lower current.
What is the force between two perpendicular current carrying wires?
The magnetic force between currents moving in the oppoiste directions is repulsive.
Fusing current capacity depend which factors?
Fusing currents is combining two or more wires together to join the currents. A critical factor is the temperature of the wire.
Why is it that there are so many kinds of wires and cable?
Because there are so many kinds of work that wires and cables need to perform. Carrying current for household and industrial power. Carrying signals for electronic devices. Hooking up the stuff in your car. These are all very different jobs requirering different wire.
