18
18 AWG Wire Box Fill
18 AWG conductors are typically used for low-voltage applications and control wiring.
1.5
cu.in. 每根导体
24.6
mm3 每根导体
7A
最大载流量
常见应用
Thermostat wiring
Doorbell circuits
Low-voltage controls
接线盒容量 18 AWG
可放入常见电气接线盒的最大导体数（仅导体）。
| 接线盒类型 | 容积 | Max 18 AWG* |
|---|---|---|
| 4" Square x 1-1/4" Deep | 18 cu.in. | 12 |
| 4" Square x 1-1/2" Deep | 21 cu.in. | 14 |
| 4" Square x 2-1/8" Deep | 30.3 cu.in. | 20 |
| 4-11/16" Square x 1-1/4" Deep | 25.5 cu.in. | 17 |
| 4-11/16" Square x 1-1/2" Deep | 29.5 cu.in. | 19 |
| 4-11/16" Square x 2-1/8" Deep | 42 cu.in. | 28 |
| Octagon Box 1-1/2" Deep | 15.5 cu.in. | 10 |
| 4" Octagon Box 1-1/2" Deep | 15.5 cu.in. | 10 |
| Octagon Box 2-1/8" Deep | 21.5 cu.in. | 14 |
| Single Gang Device Box 2-3/4" Deep | 14 cu.in. | 9 |
| Single Gang Device Box 18 cu.in. | 18 cu.in. | 12 |
| Single Gang Device Box 3-1/2" Deep | 18 cu.in. | 12 |