NCCER Level 1
______ is a form of energy that can be used by electrical devices such as motors, lights, TV's, heaters and numerous other devices to perform work.
What is electricity?
A fire alarm system shall incorporate how many independent and reliable power supplies.
What is 2?
Buried 1500v cable shall be buried _____ inches
What is 30 inches?
You have ____ days to notify the board of any changes to your name, mailing and legal address
What is 10 days?
R = E / I
What is OHM's Law?
Current flowing through a conductor produces a small ________ around the conductor
What is a magnetic field?
Your electrical panel is 48" wide, you need how much working space in front of the panel
What is 48" or 4 feet?
The clock hours of continuing education required for class A and B licensees on topics related to Mass electrical code
What is 15 hours?
In a this type of circuit, current must pass through one to get to the next. Voltage is divided between them. If one goes out, they all go out.
What is a series?
Barricades, safety nets, machine guards, interlocks, and hand switches
What are examples of engineering controls?
A smoke alarm mounted on a sloped ceiling must be located within how many feet of the peak of the ceiling
What is 3?
The maximum load permitted on a 20 amp lighting circuit in a commercial occupancy
What is 16 amps?
This is the number of apprentices a journeyman electrician can have under his/her direct supervision in the state of Massachusetts
What is 1?
For example, a lamp is rated at 1000 w. @ 120 v. That means that at 120 volts it will use:
1000 w. / 120 v. = is what?
What is 8.33 a?
Today, the NEC is administered by the ______.
What is the NFPA?
Smoke detectors installed in a single family dwelling should be replaced every _____
What is 10 years?
A ______ device is required for a ground mounted photovoltaic array where the photovoltaic equipment will be housed within a building adjacent to the array
What is a rapid shutdown?
A wiring inspector has this many hours to complete and inspection prior to concealment of electric installations
What is 24 hours?
Electricity was first introduced into people's homes near the end of the Victorian period in the _____ century
What is late 19th century? or 1800's...
What is metal clad cable or Type MC
This type of detector is best suited to detect smoldering embers
What is Photo Electric?
The demand factor used for 4 kitchen appliances in a commercial kitchen
What is 80%?
A candidate may take the electrical exam this many times before having to repeat the full number of education hours
The movement of electric charge is known as an electric current, the intensity of which is usually measured in ______
What are amperes?