Friday, 30 September 2016

What is the difference between MCB, MCCB, ELCB, and RCCB

MCB (Miniature Circuit Breaker)

Characteristics

Rated current not more than 100 A.
Trip characteristics normally not adjustable.
Thermal or thermal-magnetic operation.

8 steps to begin basic circuit design

Is Electrical Engineering Right for ME?

Electrical engineering is a field with almost limitless career opportunities. That’s due to the number of sub-disciplines and areas of specializations this field offers.

Tips for Engineering Students

It is very important for every student studying Electrical Engineering who want to stand out among others to put up these few tips in action. electrical engineering is not just a course of study, its a sensitive profession that needs absolute concern. One must be technical oriented, skillful, great analytical reasoning skill, detail oriented etc.

What is Alternating Current (AC)?

Most students of electricity begin their study with what is known as direct current (DC), which is electricity flowing in a constant direction, and/or possessing a voltage with constant polarity. DC is the kind of electricity made by a battery (with definite positive and negative terminals), or the kind of charge generated by rubbing certain types of materials against each other.

What’s the difference between AC and DC?

One looks like a straight line, the other a wave; together, they power your laptop…

Alternating current (AC) and direct current (DC) are notable for inspiring the name of an iconic metal band, but they also happen to sit right at the center of the modern world as we know it.

SAFETY TIPS

######SAFETY TIPS#####. Do you know that overloading (OL) your power socketoutlet beyond its design current specification makes it a potential Electrical hazard and capable of causing electrical fire?

Energy generation

Just to refresh our memories on this schematics of energy generation to transmission and distribution sequence!! PRIMETECH ELECTRICAL! We keep to our promises!!

UNSAFE ACT

This is not act of smartness, but act of promoting potential accident zone, which is capable of leading to electrical fire or electrocution to anybody who come in contact with it........ Please do not be a part of this, but against it to save lives and properties. Promote safety by sharing this!!!!!! We are PRIMETECH ELECTRICAL... We kee to our word!

Y/delta motor control

Y/delta motor starter circuit. Contactor K1 was latched for continuous supply of current to the circuit its the main line contactor. When the relay timer coil T is energized it will supply current to contactor K2 which will enable the motor to run in star mode. At the set time the timer will drop which will cut off current from contactor K2 at the instance the other contact of the relay will makeup and supply current to contactor K3 which will make the motor to run in delta mode. The reason for this type of motor starter is becos the quantity of current being drawn from the line when u start directly with delta method is too much. Star connection takes lesser current

Sunday, 25 September 2016

****Question*

********Question***** In your own understanding, explain the working principle of EARTHING in an electrical circuit or equipment........ You can also state types of devices that can be used in preventing damage to same cct or equipment. Goodluck as we learn today!

Question

*******Question****** In your own understanding, explain the working principle of EARTHING in an electrical circuit or equipment........ You can also state types of devices that can be used in preventing damage to same cct or equipment. Goodluck as we learn today!

RCD

What is an RCD?
An RCD, or residual current device, is a life-saving device which is designed to prevent you from getting a fatal electric shock if you touch something live, such as a bare wire. It can also provide some protection against electrical fires. RCDs offer a level of personal protection that ordinary fuses and circuit-breakers cannot provide.

QUESTION of the Month***** In conduit wiring, the ratings of the wires are higher than that of surface wiring for example lighting points for conduit is 1.5mm while surface is 1.0mm, 13amps Socket outlet is rated at 2.5mm while surface is 1.5mm. My question is what is the reason for this difference since both serves the same purpose....... Please technicalize your answer to prove you are passionate Electrical Engineer or technologist.