Table of Contents
- 1 What is the minimum size of raceway used in installing electrical conduit?
- 2 What is the minimum size of consumer’s service conductor?
- 3 How many conductors are in a raceway?
- 4 Is used to pull wires into the conduit or raceway?
- 5 What is the smallest size wire that can be used in a branch circuit rated at 20 amperes?
- 6 What is the largest solid conductor?
What is the minimum size of raceway used in installing electrical conduit?
The correct answer is (c), 3 inches. The raceway conductor fill limitations contained in 300.17 apply to the following signaling systems: Control and signaling cables [725.3(A) and 725.28]
What is the minimum size of consumer’s service conductor?
10 AWG
(4) Consumer’s service conductors shall be not less than No. 10 AWG copper wire, nor less than No. 8 AWG aluminum wire.
What is the smallest conductor that can be paralleled?
1/0 AWG
Rule 12-108 specifies that, except for neutrals, control and instrumentation circuits, parallel conductors must not be smaller than 1/0 AWG copper or aluminum.
What is the smallest wire allowed for copper conductors in lighting and power branch circuits?
As noted in Sec. 720.4, “Conductors shall not be smaller than 12 AWG copper or equivalent. Conductors for appliance branch circuits supplying more than one appliance or appliance receptacle shall not be smaller than 10 AWG copper or equivalent.”
How many conductors are in a raceway?
Table 310.15(C)(1) requires conductors to be derated whenever more than three current-carrying conductors are installed together in a raceway, cable, or in a covered ditch in the earth.
Is used to pull wires into the conduit or raceway?
fish tape
The most commonly used tool for pulling wire through conduit is fish tape, an electrician’s tool with a long, flat metal wire wound inside a wheel-shaped spool. Fish tapes are widely available in a range of lengths starting at 25 feet.
What is service conductor size?
| SERVICE ENTRANCE CONDUCTORS SIZE AND RATING | ||
|---|---|---|
| Service or Feeder Rating | Copper Conductors | Minimum Conduit Size |
| 125 Amps | #2 AWG | 1 ¼ inch |
| 150 Amps | #1 AWG | 1 ¼ inch |
| 200 Amps | #2/0 AWG | 1 ½ inch |
What is the largest permissible conductor size which may be used in a Wireway?
The wireway must first meet the dimensional requirements for the largest conductor. In the example above, the largest conductor is 750 kcmil. The minimum wireway cross section based on the largest conductor size requirements is 8” x 8”.
What is the smallest size wire that can be used in a branch circuit rated at 20 amperes?
For a 15-Amp circuit use #14 copper wire (or #12 copper-clad aluminum wire). The fuse or circuit breaker feeding this circuit is rated for 15 amps. For a 20-Amp circuit use #12 copper wire (or #10 copper-clad aluminum wire). The fuse or circuit breaker feeding this circuit is rated for 20 amps.
What is the largest solid conductor?
The correct answer for the largest size solid conductor that is permitted to be installed in a raceway is 10 AWG.
What’s the minimum size of the conductors in the branch circuit according to the NEC?
Conductors shall be sized to carry not less than the larger of 210.19(A)(1)(a) or (b). For branch circuits not more than 600 volts, conductors shall have an ampacity not less than the maximum load to be served. Conductors shall be sized to carry not less than the larger of (a) or (b).