SIS switchboard, All Sizes
Switchboard wire with cross-linked insulation for wiring inside panels and switchgear. SIS is a switchboard wiring type in NEC Table 310.4(1), used for control wiring inside switchboards and panels only.
We list 14 sizes of SIS switchboard, from 18 AWG to 4/0 AWG. 10 of them are priced online, from $0.0984/ft; the rest are quoted on request. Sold by the foot in whole feet from 25 ft, or on standard spools and coils. Up to 6 colors are listed per size. Each size has its own page with the price for every color and length, the date an order placed now ships, and the full specifications.
| Product | Size | Conductors | O.D. (in) | From $/ft |
|---|---|---|---|---|
| 18 AWG SIS Switchboard Wire | 18 AWG | 1 | 0.112 | $0.0984 |
| 16 AWG SIS Switchboard Wire | 16 AWG | 1 | $0.2522 | |
| 14 AWG SIS Switchboard Wire | 14 AWG | 1 | 0.13 | $0.2910 |
| 12 AWG SIS Switchboard Wire, Tinned | 12 AWG | 1 | 0.15 | $0.3880 |
| 10 AWG SIS Switchboard Wire | 10 AWG | 1 | 0.18 | $0.6402 |
| 8 AWG SIS Switchboard Wire | 8 AWG | 1 | 0.26 | $1.32 |
| 6 AWG SIS Switchboard Wire | 6 AWG | 1 | 0.3 | $1.64 |
| 4 AWG SIS Switchboard Wire | 4 AWG | 1 | 0.34 | $2.64 |
| 2 AWG SIS Switchboard Wire | 2 AWG | 1 | 0.4 | $3.29 |
| 1 AWG SIS Switchboard Wire | 1 AWG | 1 | 0.46 | On request |
| 1/0 AWG SIS Switchboard Wire | 1/0 AWG | 1 | 0.52 | On request |
| 2/0 AWG SIS Switchboard Wire | 2/0 AWG | 1 | 0.57 | On request |
| 3/0 AWG SIS Switchboard Wire | 3/0 AWG | 1 | 0.64 | $10.13 |
| 4/0 AWG SIS Switchboard Wire | 4/0 AWG | 1 | 0.7 | On request |
Code references are to the NEC; check the edition your jurisdiction has adopted and any local amendments.