Code Flashcards
When asked to find conductor ampacities of two different wires in the same conduit, explain how to find their ampacities
Use tables 1-4 to find individual ampacities based on lowest temperature.
What table do you use to find conductor ampacities in raceway or free air
1-4
What table to use for ambient temperatures above 30 degrees
5A
How do you use the ambient temperature multiplier?
You apply the multiplier to individual temperatures of insulation, NOT the lowest when given multiples.
What table do you find ampacities for neutral support cable?
Table 36A and 36B
What rule applies to neutral support cable allowable ampacities?
4-004 5
What rule applies to allowable ampacities for conductors sharing the same raceway?
4-004 14
What rule applies to marked and unmarked equipment temperatures?
4-006
Which rule will you find information about pull box or junction boxes?
12-3036
What is Table 22? What code rule is related?
Space for insulated conductors in boxes. Rule 12-3034
What is table 23 and what rule is related?
Number of insulated conductors in boxes. Rule 12-3034
Which section would you find information on installation of a TX?
Section 26, installation of electrical equipment.
What does section 2 outline?
Administrative
Where can you find marking of equipment?
2-100
What does code rule 2-128 Fire Spread state?
Electrical installations made so probability of fire spread is made minimum
Cable shall be properly closed or sealed
What does code rule 2-138 Insulation Integrity state?
All wiring shall be free from short circuits and grounds
What rule is fire spread?
2-128
What rule is insulation integrity?
2-138
Rule 2-202 2) suitable barriers or covers shall be provided for bare live parts within ______ of non electrical components that may require servicing.
900mm
Rule 2-308 1) working space of _____ shall be provided and maintained around electrical equipment that _______
1m, have renewable parts (fuses, breakers), disconnecting means, operating means, or require examination, operation, adjustment, or maintenance.
Where can you find information about working space around equipment?
Section 2. 2-308, 2-310, 2-312, 2-314
Where can you find enclosure types?
Section 2. 2-400. Table 65.
Fuses provide ______ to protect ________, which table should you use to find the rating to protect the conductor
Overcurrent protection to protect conductors. Use table 13 to find rating or setting of overcurrent devices protecting conductors
What minimum size disconnect switch is required on a capacitor circuit?
Rated not less than 135% of rated current of the capacitor. Rule 26-214
What conductor ampacity is used for a capacitor circuit branch or feeder circuits?
Not less than 135% of rated current.
How do you size tap conductors for a capacitor?
Find rated current (may be given), DO NOT adjust rated current by 135%, use tables 1-4 to find applicable wire size based on wire temp and current rating before 135% is applied, divide by 3 (rule 26-208 2 b), that amount is your minimum size required.
To what PF is a motor allowed to be corrected to when using a capacitor? What rule?
Not exceed no load to pf unity. 26-218 2 a
Where will you find information on branch circuits?
Section 26. 26-650
Which table do you find current flow in flexible cord
Table 12
Which rule applies to conductor derates?
4-004 Ampacity of wires and cables
Do you count neutrals when calculating conduit fill?
Yes
When you have ‘unmarked equipment’ where do you find temperature for it?
4-006 2
Where can I find information on working space
Section 2
The ampacity of conductors of different temperature ratings installed in the same raceway shall be determined by ________
The conductor having the lowest temperature rating
What is the temperature limitations for equipment rated under 100A?
60 degrees
What is the temperature rating for equipment rated more than 100A?
75 degrees
Consumer service conductors should be not less than ______
8 Al, or #10 Cu
