Low Voltage
Few good tips for low voltage switchgear maintenance and care
The low voltage switchgear involves many devices like power circuit breakers, MCBs, aux. relays, CTs, VTs etc. and of course at the end – enclosures (indoor or outdoor type). The frequency of inspection and maintenance of low voltage switchgear should be… Read more
Jul 18, 2016 | By Edvard Csanyi
Energy and Power
31 Common Household Circuit Wirings You Can Use For Your Home
The circuit wirings in this article show the most common wiring variations for typical electrical devices. Most new wiring you install will match one or more of the wirings shown. Find the wirings that match your situation and use them to… Read more
Jun 14, 2016 | By Edvard Csanyi
Energy and Power
31 Common Household Circuit Wirings You Can Use For Your Home (2)
1st part | 2nd part | 3rd part The list of the next ten household circuit wirings: Double receptacle circuit with shared neutral wire (receptacles alternate circuits) Double receptacle small-appliance circuit with GFCIs & shared neutral wire Double receptacle small… Read more
Jun 14, 2016 | By Edvard Csanyi
Energy and Power
31 Common Household Circuit Wirings You Can Use For Your Home (3)
1st part | 2nd part | 3rd part The list of the last eleven household circuit wirings: Three-way switches & light fixture (fixture at start of cable run) Three-way switches & light fixture (fixture at end of cable run) Three-way… Read more
Jun 14, 2016 | By Edvard Csanyi
Energy and Power
Few Tips For Correct Protection Against Indirect Contact In TT System
An earth fault in a TT system originates the circuit represented in Figure 1. The fault current flows through the secondary winding of the transformer, the line conductor, the fault resistance, the protective conductor, and the earth electrode resistances (RA,… Read more
Jun 03, 2016 | By Edvard Csanyi
Energy and Power
The basics of selectivity (discrimination) between circuit breakers
On economical grounds and for the reason of reliability of the service, it is not always ideal to interrupt the supply to the installation in the case of a fault as fast as possible. That’s why we have the selectivity… Read more
Apr 04, 2016 | By Edvard Csanyi
Low Voltage
18 initial checks of electrical installations that every electrician MUST perform
Before any testing of low voltage electrical installations (and equipment) is carried out, a detailed physical inspection must be made to ensure that everything is to a relevant National standard, erected/installed in compliance with the IEE Regulations and not damaged… Read more
Mar 05, 2016 | By Edvard Csanyi
Energy and Power
Things you MUST verify when designing low voltage switchgear
Low voltage switchgear and distribution boards form the link between the equipment for the generation (generators), transmission (cables, overhead lines) and transformation (transformers) of electrical energy on the one hand and the consumers, e.g. motors, solenoid valves, devices for heating,… Read more
Mar 02, 2016 | By Edvard Csanyi
Energy and Power
The Basics Of Molded Case Circuit Breakers You MUST Know
Molded case circuit breakers are interrupting devices with self-contained, current-responsive elements. These breakers are assembled as an integral unit in a supported and enclosed housing of insulating material. Depending on the amount of protection required, these breakers can sense internally… Read more
Feb 27, 2016 | By Edvard Csanyi
Energy and Power
3 Common Misconceptions Regarding Automatic Transfer Systems
Several common misconceptions regarding automatic transfer systems exist. Three of these are addressed here // I need a complex automatic transfer scheme at every voltage level AC Control Power for my automatic transfer PLC can be handled by the system UPS’s… Read more
Feb 26, 2016 | By Edvard Csanyi
Energy and Power
Why I prefer busbar trunking systems more than cables
When a planning concept for power supply is developed, it is not only imperative to observe standards and regulations, it is also important to discuss and clarify economic and technical interrelations (cables and/or busbar trunking systems depending on situations). The… Read more
Jan 30, 2016 | By Edvard Csanyi
Energy and Power
10 questions to test your electrician skills
These are not-so-easy, but also not-too-hard questions for you to try to answer and test your electrician skills. Whether you are a novice in a field of electrical engineering or a professional electrician, these questions will move your brain cells… Read more
Jan 25, 2016 | By Edvard Csanyi
Low Voltage
Guidelines To Inspection Of Molded Case Circuit Breakers (MCCB)
The need for inspection of molded case breakers (MCCB) will vary depending on operating conditions. Suggested inspection and testing is defined in ANSI/NEMA AB 4, Guidelines for Inspection and Preventive Maintenance of Molded Case Circuit Breakers Used in Commercial and… Read more
Jan 08, 2016 | By Edvard Csanyi
Low Voltage
Electrical Distribution Architecture In Water Treatment Plants
For both drinking water and wastewater treatment, 4 different sizes of plants have been distinguished. The size of plants can be expressed in quantity of treated water per day, or in corresponding number of inhabitants. Four different types of (waste)… Read more
Jan 04, 2016 | By Edvard Csanyi
Energy and Power
The Basics Of Circuit Breaker Tripping Units
The main objective of circuit breaker tripping units and protective functions in general is to detect faults and to selectively isolate faulted parts of the system. It must also permit short clearance times to limit the fault power and the… Read more
Dec 21, 2015 | By Edvard Csanyi
