Jun 02, 2021
Provisions and requirements for the reconditioning of equipment have been added to multiple sections of the 2020 NEC. Panelboards, switchboards, and circuit breakers, to name a few, can be reconditioned according to specific Code requirements. Read more about the definition for reconditioned has also been added to Article 100 from our blog!
Jun 02, 2021
NEC section 300.25, General Requirements for Wiring Methods and Materials is new for the 2020 Code cycle. This section regulates wiring located in Vertical Exit Enclosures, also known as stair towers. The new 2020 NEC section restricts the installation of any wiring method within an exit enclosure separated from the building by fire-resistant construction, except for that wiring belonging to equipment in the exit enclosure. Prevent costly design and installation errors—read more from our blog!
Jun 02, 2021
Your many years of field experience and your dedication to exam preparation have enabled you to pass your test. Your dream of financial freedom by owning your own electrical business is about to get started. Now what options do you have?
Jun 02, 2021
The popularity of electric vehicles continues to increase. How can the National Electrical Code have jurisdictional authority over the outlets in a car? What constitutes an electric vehicle, and are hybrids like Toyota’s popular Prius included? Finally, what are the specific requirements? Read more from our blog!
Jun 02, 2021
Article 250 is arguably the most important article in NEC 70, and much of its content is devoted to the proper sizing and installation of equipment grounding conductors. First, let us consider the purpose of an equipment grounding conductor (EGC). We know that EGC’s provide a low impedance path from the equipment to the overcurrent protective device (or ground detector for high-impedance grounded systems) so that a fault condition can be quickly cleared. Hence, EGC’s are a critically important safeguard to persons and equipment.
May 05, 2021
The average consumer does not understand the potential dangers related to electricity and pools, so they rely on you, the electrical professional, to do it right. There have been 98 verifiable water deaths from electricity since 1986, but that is likely just the tip of a very large iceberg. A small amount of current can cause muscular paralysis and drowning. We have put together a basic checklist for electrical safety-related to pools. This list is not exhaustive. We will focus our attention on three important areas: grounding and equipotential bonding, GFCI protection, and corrosive environments.
May 05, 2021
By the time the company makes it to the job site, considerable time and money have already been spent on the project. The electrical foreman has many responsibilities and can single-handedly be the cause of a failed project. The foreman needs to be the National Electrical Code guru, assistant to the Project Manager, Human Resources liaison, team coach, and much more. Like other positions in the field, the electrical foreman needs continuous training to keep on top of the game. Here are four easy steps for managing an electrical job site.
May 05, 2021
In large commercial occupancies such as grocery stores, refrigeration is a necessary part of the business model. Coolers, refrigerators, and freezers line several isles containing produce, frozen food, meat, and dairy products. Connecting these indoor components to compressor and condenser units requires several hundred feet of refrigerant lines. These lines are typically field-installed copper pipe with many brazed joints. Pressure testing connections before beginning equipment startup is essential. The cost of refrigerant, malfunctioning equipment, environmental hazards, and the safety of occupants are good reasons to ensure leakproof refrigeration systems. Additionally, most mechanical codes and the Environmental Protection Agency (EPA) require pressure tests for new piping installations.
