Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
|
1. ) wiring located within the cavity of a fire rated ceiling assembly but not considered part of the fire rated assembly is allowed to be |
4. Supported by independent support wires 300.11 (b) (1) |
|
|
2.) A 24 V system needs a small is working depth of |
2.) 3 feet Table 110.26 (a)(1) |
|
|
3.) all of the subsequent are acceptable forms of hearing protection except |
1) Cotton inserted in the ear Osha 1926.101 (c) |
|
|
4.) If metal underground water pipe is utilized for grounding it will have a smallest of how many feet in contact with the earth |
3. 10 feet 250.52 (A)(1) |
|
|
5.) there are six current carrying wires in a conduit the bonding wire is |
1) Not counted in the adjustment fit factor 310.15 (B)(6) |
|
|
6. What’s the largest overcurrent protection for a branch circuit that supplies a single non-motor operated utilization equipment in an occupancy? the utilization rating of 20 Amps |
1.) 20 amperes 422.11 (E) 1 |
|
|
7. An underwater junction box for a 12 V lighting system for a swimming pool is connected with a PVC conduit it is a flush deck box to meet the NEC it must |
3.) be filled with potting compound 680.24 (A)(2)(c)(1) |
|
|
8.) Alternating current means the direction |
2. Reverses at intervals |
|
|
9.) A pool has a underwater speaker system the PVC conduit runs to the forming shells must have an insulated copper wire size that |
4) #8 |
|
|
10.) What’s the largest ampacity/ breaker size for an aluminum AWG type TW #10? |
2.) 25 310.15(B)(16) 240.4(D)(6) |
|
|
11.) In electromotive force is measured in |
2.) Volts |
|
|
12.) The ampacity of a 15 foot feeder tap wire that supplies a panel board must be a minimum of |
3) 1/3 The ampacity of the feeder 240.21 (b)(2(1)) |
|
|
13) what will be the smallest space between multiple rods or piped grounding electrodes |
2.) 6foot 250.53 (A)(3) |
|
|
14) what’s the largest size branch circuit allowed to feed the line side of a transformer for 30 V lighting system |
3.) 25 amperes 411.3 |
|
|
15.) A bedroom in a residential home will have a 15 amp or 20 amp receptacle set up in every wallspace of |
1.) 2 foot or more in width 210.52 (a)(2)(1) |
|
|
16.) what’s the smallest depth for direct burial cable operated at 600 V or less in all unspecified locations |
2.) 24 inches Table 300.5 |
|
|
17.) A single-family residential has a net calculation load of 22,800 V amps, voltage is 240 V single phase, the feeder load is |
4.) 95 amps 22800va/240v=95amps |
|
|
18.) One advantage a 24 V device has over a 12 V device is that it |
1.) has lower current draw |
|
|
19.) A hospital has a grounding point in a critical care area adjacent to the patient vicinity what is a small is ground wire size allowed |
3.) #10 517.19 (D) |
|
|
20.) surface mounted fixtures which contain ballast are to be mounted on a low density cellulose fiber board ceiling they must be a minimum of how far from the surface of the fiberboard |
4.) 1 1/2” in 410.136(b) |
|
|
21.) what’s the largest allowed branch circuit overcurrent protection for a 240 V, 4500 watt, 50 gallon water heater |
4.) 25 amps 422.13 then table 240.6(a) 4500/240=18.75 x 1.25= 23.43a |
|
|
22.) what color is utilized to mark the wire having the higher voltage to ground for a switchboard or panelboard supplied from a three, phase 4 wire delta system |
1.) Orange 110.15 |
|
|
23.) Metal conduit entering service equipment enclosure with concrete or eccentric knockouts containing service wires will have |
3. Bonding bushings and jumpers 250.92(B) |
|
|
24.) what’s the voltage to ground on the “A” phase of a 240 V three phase, 4 wire system |
2.) 120v |
|
|
25.) A 2 inch conduit enters the east side of a pull box and exits on the west side of the same box. The smallest space from the east wall the west wall of the pool box is how many inches |
4.) 16” inches 314.28 (a)(1) Straight pull no less then times 8 |
