Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Self-Test 1 Q&A 4-6

Self-Test Questions Volume 1

QuestionAnswer
Name the two types of plug fuses. Edison base and type S.
Explain the conditions under which an Edison-base fuse panel can be installed An Edison fuse panel can be installed only when it is modified by inserting adapters in the fuse holders to accept type S plug fuses.
List the amperage ratings for type S plug fuses 0-15 amperes, 16-20 amperes, and 21-30 amperes
What is the maximum capacity of amperes for ferrule-type cartridge fuses? 60 amperes.
Why can't a 60-ampere, ferrule type be used in place of a 20-ampere, ferrule type? Fuse diameter and length increase as amperage and voltage increase
What is the weakest part of an electrical circuit? The fuse.
How does a thermal-type circuit breaker work to interrupt the circuit on an overload? A thermal type has an element within the breaker that responds to temperature change. When the current flow reaches a set level, the element bends enough to trip the latch. This opens a set of contacts to break the circuit.
How does a magnetic type of circuit breaker open the circuit on an overload? A magnetic-type circuit breaker responds instantaneously. A small electromagnet actuates the breaker mechanism. Enough magnetic flux is created to attract a small armature. As the armature moves, the breaker mechanism trips and opens the circuit.
What is the advantage of a magnetic circuit breaker over a thermal type? It opens the circuit instantaneously when there is an excess of current flow.
What is the purpose of a GFCI? A GFCI used as extra protection on circuits where the potential of having a ground though the user is higher.
Where must ground fault breakers be installed in a home? All 120-volt, single-phase, 15- and 20-ampere receptacles in bathrooms, garages, and outdoors.
Created by: RenegadeWolf