Commercial Electrical Services Quizlet

Meters and current transformers are designed for use on either 50 or 60 hz systems.

Commercial electrical services quizlet.

The most dangerous part about these electrical panels is that they can operate without a problem for 20 or 30 years and then unexpectedly fail to trip for a short circuit or overload. This is a matter of local law but in general the property owner is responsible for making sure any electrical work has the proper city permit and is done by a licensed contractor. The national electrical code nec and standard for electrical safety in the workplace nfpa 70e term is the federal government agency established to ensure a safe and healthy environment in the workplace. Start studying elect commercial electrical services.

It s used to prevent electrical fires. From there the electricity is fed through a meter and into the building. For small commercial buildings or residential customers power companies lower the voltage with a transformer on a power pole or mounted on the ground. Ammeter measures the current flow in amperes in a circuit.

Power distribution in small buildings. Afci arc fault circuit interrupter an arc fault circuit interrupter is a special type of receptacle or circuit breaker that opens the circuit when it detects a dangerous electrical arc. If not the property owner has broken the law and when the times co. Small commercial or residential buildings have a very simple power distribution.

Learn vocabulary terms and more with flashcards games and other study tools. Free shipping orders 75. Wattnode meter models are available in seven different versions that cover the full range of electrical services types and voltages. Learn vocabulary terms and more with flashcards games and other study tools.

An ammeter is connected in series in the circuit unless using a clamp meter. Start studying commercial electrical services.