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Monthly Archive for: «December, 2011»

NEC Code for Size of Cable for Motor

Size of Cable for Branch circuit which has Single Motor connection is 125% of Motor Full Load Current Capacity. What is the minimum rating in amperes for Cables supplying 1… Read more

Dec 30, 2011 | jiguparmar

Motor terminal box

Transformer Protection – Abstract from NEC

According to NEC 450.4, “each transformer 600 volts, nominal, or less shall be protected by an individual overcurrent device installed in series with each ungrounded input conductor.” Such overcurrent device… Read more

Dec 26, 2011 | jiguparmar

Transformer protection - Aabstract from NEC (National Electric Code)

PROFIBUS at a Glance

PROFIBUS is an open, digital communication system with a wide range of applications, particularly in the fields of factory and process automation. PROFIBUS is suitable for both fast, time-critical applications… Read more

Dec 24, 2011 | Edvard

PROFIBUS - Optical connection

When we started to use PLCs after all?

PLCs (Programmable Logic Controllers) were first introduced in the 1960’s. The primary reason for designing such a device was eliminating the large cost involved in replacing the complicated relay based… Read more

Dec 21, 2011 | Edvard

When we started to use PLCs after all?


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