**Three Phase Current - Simple Calculation**
The calculation of current in a three phase system has been brought up on our site feedback and is a discussion I seem to get involved in every now and...

**Lighting - Lamps**
Lamps are the essential part of any luminaire. These are the light generating components. Since the advent of electrical lighting in the middle of the...

**Cable Sizing Software**
When sizing cables nearly, everyone uses some form of software. This ranges from homespun spreadsheets to complex network analyses software. Each has its...

**LED Replacement Light Bulb**
The inventor of the first visible light-emitting diode makes history again this year as it begins to show customers a 40-watt replacement GE Energy Smart...

**Smarter Electrical Distribution**
The other day I came across an article in Technology Review on the development of a smart transformer. A professor at North Carolina State University is...

**Low Voltage Fault Tables**
The following tables provide quick order of magnitude fault levels for a a range of typical low voltage situations.

**How Electrical Circuits Work**
If you have no idea how electrical circuits work, or what people mean then they talk about volts and amps, hopefully I can shed a bit light. I’m intending...

**International System of Units (SI System)**
The International System of Units (abbreviated SI) is the world's most widely used system of units. The system consists of a set of units and prefixes...

**Our internet address and Vanity URLs**
Visitors who like to type web address rather then click menus may be interested in how our URL structure works.

**Arc Flash Calculations**
Working in the vicinity of electrical equipment poses an hazard. In addition to electric shock hazard, fault currents passing through air causes Arc Flash...