Answer / d.s.david

Overload current istaking place when a device taking
continuous over current from the supply source but short
circuit current is a fault current taking place in the laod
by earth fault or phase fault.

Answer / asutosh

short circuit current is of the order of 100 times that of
normal rating & it is expessed in kA.

the increase in normal rating due to anything rather than
short circuit is kwon as over load current

Answer / murali krishna m

Short circuit means there is no resistance, so it will
produce high curent.
Overload means the device draw excess of currrent from the
supply source. due to this the source will be burn or
dameged.

Answer / sennapparajan

shart circuit current-if happens only pahase to pahse short
or phase to earth.

over laod current- it happens only when machainary or
motors take current beyond the ratings.

Answer / raghu

Short circuit means the current passing though conductor
by-passes the connected load. This happens when the metal
wires come in contact at an unwanted location, generally due
to failure of insulation. Numerically, the resistance
connected to the circuit becomes nearly zero and thus the
current, i=v/R = v/0 = infinity, causing damage to source,
conductor. A fuse saves the situation by melting due to high
current and the source is disconnected to avoid further damage.

Short circuiting is possible in a circuit (eg: home wiring)
as well as inside a electrical device (eg: motor) in its
internal circuitry.

The term "Overload" may refer to a circuit or a device.

When too many devices are plugged in to a circuit (eg: many
appliances in a single power socket) and if the total
current requirement is much more than the "design current
capacity, (rating)" of the circuit, the circuit is said to
have over loaded. Here also,as in short circuit, current
drawn is high causing damage to circuit or source.

Continuous malfunctioning or faulty working of devices may
cause overload. Due to some specific reasons (over heating,
no-load running, high-load running), the internal circuitry
of the device gets partially short circuited. Hence the
capacity of device gets reduced (as if a half HP pump is
used where 1 HP is required); however, the device continues
with its work at a reduced resistance but with a huge task
at hand. Thus the device is said to have overloaded. The
overloaded device draws high current (due to reduced
resistance) from the circuit and thus causing damage.

Short circuiting is a sudden action/ response (spike in
current) while overloading is a slow process(excess current
is being drawn for a large duration).

Answer / nagarajan

First of all overload currents having sinusidal wave the
peak value of current is same but magnitude will be high
but short circuit currents has no sine wave,more over this
is called over currents this is by sc not by over
loads.unsteady sine wave peak will be uneven and high

Answer / sudheer

short current is getting fault current and over load
current get more current from the supply source

Answer / kpower

It is an electrical circuit is one that allows a current to
travel along a different path from the originally
intended.During that time a high electricity is produced

Answer / rishabh sharma

Overload caused due to Mechanical/Electrical wear
tear/damage but short circuit is due to electrical fault only..
Overload can result into short circuit...

Answer / marino b manuel

Short circuit current, the resistance is infinity while the overload currents is excess current or rating from the load.

In India,we use 230V,50HZ,where as many other countries use 110V,60HZ what r d advantages and disadvantages of each of them?

8 Answers   GVK,

1.what is surge 2.what is lightning 3.what is switching 4.difference between surge,lightning,switching used in power system 4.definition of surgearrestor,lightningarrestor 5.adv and disadv of surgearrestor,lightningarrestor 6.uses and purpose of surgearrestorand lightning arrestor 7.block dia of surge arrestor 8.blockdiagram of lightning arrestor 9.operation and working of surge arrestor and lightning arrestor 10.basic formula of surgearrestor and lightning arrestor 11.basic diagram of surge arrestor and lightning arrestor

1 Answers   Crompton Greaves, Framo, L&T,

in 5 mva transformer 33/11 kv s/s what rating of capacitor bank is required & what is the fourmula for rating

6 Answers  

At present how many HVDC lines are there in india

18 Answers   HAL, Infosys, KSEB, Kuntham,

state the construction of incondenscent lamp?

0 Answers  

IN OLTC we observed "OUT OF STEP" Alarm, we have two different transformer, when both are in parallel this type of alarm observed. what's the meaning of this alarm and why it occurs???

3 Answers  

What is the actual calculation for transformer short circuit test?.

0 Answers  

why we are not giving the zone 1 trip command to the master trip relay

0 Answers  

Discribe type of fault in DOL and stardelta startor.

0 Answers  

11kv = LT 440v , how many amp.supose 440v side 5000 amp curent drown

2 Answers   Motwane,

why neutral of 6.6 kv star connected sq. cage induction motor does not get earthed, though for earth fault protection it is must.

7 Answers  

Why we called L-G fault as line to ground fault why ground? suppose if a line falls on building roof then can we called these fault as line to roof fault? please explain why ground term is used here?

3 Answers   Bhel,