Knowing how to use the National Electrical Code (NEC) can provide a number of benefits to an electrical contracting business. Here are some of the key reasons why: Compliance with Safety Standards: The NEC provides a set of standards and …
Harmonic Currents and Zero Sequence Issues Harmonics are frequencies that are multiples of the fundamental frequency in an electrical system. Triplen harmonics are harmonics with frequencies that are three times the fundamental frequency. In an electrical system, when there are …
electrical exam prep The main objective of this page is to provide a one-stop for electricians who are preparing for electrician licensing examinations and any other electrician exam conducted by the state authorities. Here are some of our electrical exam …
Electrical Exam Prep Questions Electrical Exam Prep Questions Electrical Exam Prep Questions There are several resources where you can find the best electrical exam prep questions, depending on the type of electrical exam you are preparing for. Here are a …
Stress is everywhere | Don’t let it consume you. The stress people feel when they fail at something can be intense and overwhelming. It may include feelings of disappointment, frustration, sadness, anxiety, shame, or embarrassment. This stress can be especially …
Overcurrent Protection versus Overload Protection Overcurrent Protection versus Overload Protection What are the differences in Overcurrent and Overload Protection? Overcurrent protection and overload protection are two types of electrical protection that are commonly used to prevent damage or failure of …
Understanding Mobile Home Calcualtions MOBILE HOMES CALCULATIONS – STANDARD METHOD I would like to start off this article by saying that it would be exceedingly rare to use 550.18 to perform a load calculation for a mobile home in the …
Sizing Wireways Made Easy Sizing Wireways Sizing a wireway to hold a predetermined number of conductors is similar to sizing raceways. First, determine the total area of the conductors in square inches. This is found by using Table 5 for …
Installing Conductors in Existing Raceways INSTALLING CONDUCTORS INTO EXISTING RACEWAYS It is common for electricians to install conductors into a conduit raceway system that already has conductors installed in them. If this is the case, the amount of space being …
Dangers of Multiwire Branch Circuits Dangers of Multiwire Circuits One of the dangers of multi-wire circuits is the effect of an open neutral. If the neutral becomes open, the circuit becomes a series circuit and the voltages will divide between …