NCCER Electrical In-class activity

NCCER Electrical In-class activity What is shown on a sectional drawing? - cutaway view of a building The NEC recommends maintaining voltage within a 3% drop. If a branch circuit operates at 240 volts AC. What is the minimum circuit operating volt? - 232 What is the name of the connecting device shown in the diagram? - split - bolt The volt amperes in an AC circuit is the same as - apparent power What should be done to change rotation of a 3 phase motor? - Swap any two T leads 5. If a voltage source of a circuit provides 240 volts and there are 5 ohms of resistance, how much current is in the circuit? - 48amps 4.What is the voltage drop for a #8 (16.510 cmil) copper wire at 120v. 215 feet one way and a load of 39amps? - 10.5 What instrument is used to measure current - Ammeter Which plan indicates the location of structures and equipment on a property - site Generally , the most ideal conductor is made of: - copper What is the standard size system used in the united states - AWG What is insulating tape? - Non-Conductive adhesive tape Which of these is used as a guide to assist cables entering a conduit? - Piston What type of conduit body is characterized by a threaded straight hub on each end? - C Which of the following is not a reason why electrical systems must be grounded? - Limit the potential between ungrounded conductors A megger will be used to check an in-service cable. The Electrician MUST be sure that the circuit is: - De-energized and locked tagged out, and tested Rubber gloves MUST be electrically tested at MAXIMUM intervals of: - 6 months A dangerously high voltage is produced when someone opens the secondary circuit of a: - Current transformer Which choice best describes the two types of pushbutton operators typically used in motor controls - Open and Closed In the event of an emergency where the lockout/ tagout device is left secured, who can remove the lockout/tagout device? - Authorize supervisor A drawing showing a point A to point B hookup of conductors is called a: - Wiring diagram A NEMA type___ enclosure is both watertight and corrosion- resistant. - 4X What's the MAIN characteristic of a confined space? - Limited access and egress