The meter base size determines which size service conductor you need to purchase. Typical service conductors include:
| Service Rating | Maximum | Distance Conductor |
|---|---|---|
| 200 amp | 220 feet | 4/0–4/0–2/0 Aluminum (1 run) |
| 200 amp | 250 feet | 250–250–3/0 Aluminum (1 run) |
| 200 amp | 340 feet | 350–350–4/0 Aluminum (1 run) |
| 320 amp | 220 feet | 4/0–4/0–2/0 Aluminum (2 runs) |
| 320 amp | 250 feet | 250–250–3/0 Aluminum (2 runs) |
| 320 amp | 340 feet | 350–350–4/0 Aluminum (2 runs) |