For 150 amp you will need a 1/0-gauge copper wire. For 200 amp service you will need a 250 kcmil-gauge copper wire.
What is the ampacity of #2 Aluminum?
Allowable Ampacities of Insulated Aluminum or CopperClad Aluminum Conductors
| Conductor Size (AWG/KCMIL) | 60°C/140°F TW, UF | 90°C/194°F TBS, SA, SIS, FEP, FEPB, MI, RHH, RHW-2, THHN, THHW, THW-2, THWN-2, XHH, XHHW, XHHW-2, USE-2, ZW |
|---|---|---|
| 3 | 65 | 85 |
| 2 | 75 | 100 |
| 1 | 85 | 115 |
| 1/0 | 100 | 135 |
What size aluminum wire is good for 150 amps?
| SERVICE ENTRANCE CONDUCTORS SIZE AND RATING | ||
|---|---|---|
| Service or Feeder Rating | Copper Conductors | Aluminum or Copper-Clad Aluminum |
| 100 Amps | #4 AWG | #2 AWG |
| 125 Amps | #2 AWG | #1/0 AWG |
| 150 Amps | #1 AWG | #2/0 AWG |
How many amps will 2 0 aluminum wire carry?
Allowable Ampacities of Insulated Aluminum or CopperClad Aluminum Conductors
| Conductor Size (AWG/KCMIL) | 60°C/140°F TW, UF | 90°C/194°F TBS, SA, SIS, FEP, FEPB, MI, RHH, RHW-2, THHN, THHW, THW-2, THWN-2, XHH, XHHW, XHHW-2, USE-2, ZW |
|---|---|---|
| 1/0 | 100 | 135 |
| 2/0 | 115 | 150 |
| 3/0 | 130 | 175 |
| 4/0 | 150 | 205 |
What diameter is 2/0 aluminum wire?
0.376
Size AWG: 2/0. Stranding: 18. Conductor Diameter Inches: 0.376.
How bad is aluminum wiring?
The problem with aluminum wiring is that it expands and contracts at a high rate, which can lead to loose connections. Connections between aluminum and copper can also cause oxidation, resistance, heat, increased expansion… you get the picture. All of that can lead to a fire.
