Article 210 Branch Circuits Article 240 Overcurrent Protection Article 250 Grounding Article 310 Conductors for General Wiring Article 430 Motors, Motor Circuits and Controllers Branch-circuit size for motor load Q: I have to install a 11/2 horsepower, single-phase, 120V motor with a nameplate full
Moving your network into the future takes time, initiative and planning. But most of all, it takes knowledge. Both the installer and the end-user need to understand what is available and what is feasible.
Another selling point for the cable industry Warranties. They are both frustrating and appreciated. Warranties are those intangible benefits that consumers look for prior to making a large purchase. Who has not taken the warranty into consideration before buying a car, a freezer, even a house?
Article 210 Branch Circuits Article 250 Grounding Article 310 Conductors for General Wiring Article 320 Armored Cable: Type AC Article 404 Switches Derating Cables Q: Is it necessary to derate types NM-B, AC or MC cables where these cables are bundled to enter a branch-circuit panelboard?
Dedicated 20-ampere branch circuits are required Most dwelling units are required to have a laundry area within the living area or have a laundry area provided on the premises for a multifamily building.
Add to your profit with voice and data wiring Residential electrical contractor owners and managers must often push aside their efforts to increase business and improve the bottom line to make way for bidding projects and managing jobs.
Article 110 Requirements for Electrical Installations Article 250 Grounding Article 310 Conductors for General Wiring Article 312 Cabinets, Cutout Boxes and Meter Socket Enclosures Article 430 Motors, Motor Circuits and Controllers Article 518 Places of Assembly Thermostat as motor disconnect Q:May
Earlier this year, routine activities came to an abrupt halt at San Bernardino Valley (Calif.) College when a construction crew excavating with a backhoe struck a power cable, causing a small explosion that knocked out a campus transformer.
The basis of grounding and bonding starts at the connection of a bonding jumper or an equipment-grounding conductor to a box, an enclosure or other electrical equipment and ends at the point of connection to the service-grounded conductor in a grounded system or at the service-equipment enclosure fo
Money usually decides this debate One of the great debates that affects contractors—especially those dealing with communications systems—may be the question of shielded twisted pair (STP) or unshielded twisted pair (UTP).
Where did these terms come from? Rarely do I present a fiber optic seminar without getting some questions on what some connectors terminology means, and often I’m questioned on how such a term originated.
Speeding up the gigabit ethernet Two industry leaders (the Institute of Electrical and Electronics Engineers, or IEEE, and Intel) are working on a means to deliver information (or data) to the user faster, at rates of up to 10 gigabits per second (Gbps).