+
Related Flashcards
Cards In This Set
| Front | Back |
|
Does volume have to be marked on metal boxes listed in Table 314.16(A)?
|
No. 314.16(A)(2)
|
|
What table lists the maximum # of conductors permitted in various standard size metal boxes?
|
314.16(A)
|
|
Does the volume marked on the metal box itself override the volume shown in Table 314.16?
|
Yes. 314.16(A)(2)
|
|
What items can be used to increase the capacity of a box?
|
Extension rings, plaster(mud) rings, domed covers. 314.16(A)
|
|
What common components are also counted as conductors in box fill calculations?
|
Devices and fittings.
|
|
How are multiple equipment grounding conductors counted in box fill calculations?
|
Multiple grounds are counted as one conductor.
|
|
Do wirenuts and pigtails count against box fill?
|
No
|
|
How do you calculate box fill with equipment grounding conductors of multiple sizes entering the box?
|
You count only the size of the largest equipment grounding conductor. 314.16(B)(5)
|
|
Are raceway fittings counted in box fill calculations?
|
No
|
|
How are equipment bonding jumpers counted in box fill calculations?
|
Equipment bonding jumpers are not counted in box fill calculations.
|
|
Unbroken conductors passing through boxes are counted as one conductor unless what condition is met?
|
Unless the coil or loop of unbroken wire is longer than 12" in which case it is counted as two conductors.
|
|
Internal cable clamps(up to two) are counted as one conductor total. What size conductor are they counted as?
|
They are counted as one conductor of the largest size conductor present in the box.
|
|
How many conductors are luminary studs and hickeys counted as?
|
One
|
|
How are devices like receptacles and switches counted in box fill calculations?
|
Each yoke is counted as two conductors of the largest size conductor attached to the yoke.
|
|
What is the volume of a standard 1-1/2" deep square box?
|
21 cubic inches
|
