3/0 AWG SIS Switchboard Wire
Switchboard wire with cross-linked insulation for wiring inside panels and switchgear.
Per foot at 25 ft$10.13/ft

Ships by Fri, Oct 9
For an order placed now. Orders after 12 PM ET, and on weekends and holidays, count from the next business day.
You get a tracking number by email the day it ships.
Free UPS Ground shipping from $499 to the lower 48. A reel over 150 lb ships by freight, charged in the cart.
Cut wire is final sale. Uncut spools can come back within 30 days for a 15 percent restocking fee. Returns policy
Questions about this wire?
- Call (509) 303-4726, Mon to Fri, 9am to 5pm Eastern
- Email sales@wirewombat.com
Request a callback
At a glance
| Outside diameter | 0.64 in |
|---|
Questions about this size
- Can I buy it by the foot?
- Yes, cut to length in whole feet from 25 ft, or on 100, 200, 250, 500, 1,000 ft spools. Cut wire is final sale; uncut spools can be returned within 30 days.
Full specifications
| Type | SIS switchboard |
|---|---|
| Gauge | 3/0 AWG |
| Conductors | 1 |
| Conductor | tinned copper |
| Stranding | 133-strand |
| Nominal O.D. | 0.64 in |
| Sold by the foot | From 25 ft to 5,000 ft, in whole feet |
| Standard spools | 100, 200, 250, 500, 1,000 ft |
| Ships in | 1 to 2 business days from the order day |
Insulation, ratings, listing and weight are confirmed from the manufacturer's sheet with your quote.
Spec sheet on request.
Questions
- What is the smallest cut?
- 25 ft for this product, in whole feet, up to 5,000 ft per row. Each length ships on its own coil.
- Can I return cut wire?
- No. Cut wire is final sale. Uncut, unopened spools and boxes can come back within 30 days for a 15 percent restocking fee.
- When does it ship?
- The ship dates beside Add to cart are for this product and count business days in Eastern time. You get a tracking number by email the day it ships.
Other gauges of this wire
From $/ft- 18 AWG18 AWG SIS Switchboard Wire$0.0984
- 16 AWG16 AWG SIS Switchboard Wire$0.2522
- 14 AWG14 AWG SIS Switchboard Wire$0.2910
- 12 AWG12 AWG SIS Switchboard Wire, Tinned$0.3880
- 10 AWG10 AWG SIS Switchboard Wire$0.6402
- 8 AWG8 AWG SIS Switchboard Wire$1.32
- 6 AWG6 AWG SIS Switchboard Wire$1.64
- 4 AWG4 AWG SIS Switchboard Wire$2.64
- 2 AWG2 AWG SIS Switchboard Wire$3.29
- 1 AWG1 AWG SIS Switchboard WireOn request
- 1/0 AWG1/0 AWG SIS Switchboard WireOn request
- 2/0 AWG2/0 AWG SIS Switchboard WireOn request
- 4/0 AWG4/0 AWG SIS Switchboard WireOn request
