What is short circuit and overload?

Answer 1

In simple terms a short circuit is when negative & positive

come together I:E a cable (positive)that is frayed touches the ground (negative).

A short circuit is also known as a dead short.

An example of an overload might be.

If the wiring in your car headlights was rated at 20 Amps & you

wired driving lights into that circuit, the Amperage draw would go up to 40 Amps

Causing the fuse to blow, or if the circuit was unfused, the wiring to burn out.

Answer 2

A short circuit is basically what you'd get if you'd fold a nail in half and jam one end into either hole of a socket. It can happen if you have insulation damage to the wiring. Overload is when there's an appliance that's pulling more power than the circuit is rated for, but not as much as during a short circuit.

Answer 3

A short circuit is where the current flow bypasses the load, or takes a shorter path than it should. This usually pulls all the available amperage and can cause great damage and overheating. Overcurrent is where more amperage travels on the conductors and equipment than they are designed to handle, causing overheating and damage. An overload is where more current is pulled than the equipment and wiring can normally handle. However in a motor, a brief overload is expected and therefore is handled by a slow acting set of components which are called "overloads" because they supply overload protection.

You didn't ask about fault current, but fault current is current that travels on normally non-current-carrying conductors, such as ground wires, or your body.

In the cases of short circuits, overcurrent, and fault current, you should have overcurrent protection, generally in the form of fuses or circuit breakers.

Answer 4

Overload draws excessive power because the circuit is doing more work than it is designed for (inagine stalling your car because you tried to start moving in 5th gear). Short circuit is a change in the circuit making it shorter than it was designed; usually bypassing the resistive element (the part of the circuit doing the work), and allowing an excess (and usually dangerous) amount of power to flow through the circuit because it is now un-restricted. Thermal overloads are designed to prevent motors etc. from dammage due to overloading; fuses and breakers are designed to prevent everything (including you) from dammage due to short circuits.

Answer

An overload current is an excessive current that results from connecting too heavy a load to the supply.

A short-circuit current is a very high current resulting from a short circuit between the supply conductors or between a supply conductor and earth.

Answer 5

A: short circuit is when a short occurs on any circuit due to failure of a component tor externally introduced. Overload occurs when additional load [resistance ] is applied to any circuit. This condition if allowed to be sustained will cause the circuit to fail eventually

Answer 6

Overload currents and short-circuit currents are categories of overcurrent. The difference is the magnitudes of the currents involved.

An overload current is a current that exceeds the rated current of the conductors supplying the load, and is due to an excessively-high load.

A short-circuit current is very much larger than an overload current, and is the fault current resulting from a low-resistance short circuit between line and neutral conductors.

Answer 7

Open circuit its when phase is cut into two and short circuit its when two different phases are touching

Answer 8

Short-circuiting:it is the way in which fire can exists by melting the wire. overloading:it is excess of heating and if we use to many circuit in one point then it is called overloading