You can buy interconnecting busbars for linking two or three PHI batteries (SKU numbers BB-2-12 and BB-3-12, respectively). Ensure all batteries in the PHI battery bank are of the same type (i.e., do not mix BB-2-12 and BB-3-12 products in the same PHI battery bank). This creates restrictions when connecting fewer than 12 PHI batteries in the BOSS.12 enclosure.
| Number of PHI Batteries |
Recommendation |
| 12 |
Purchase 4 x BB-3-12 busbar sets (4 positive, 4 negative) and a total of 8 45”-long 2/0 Arctic Ultraflex Blue® cables with 3/8” lugs included (4 positive, 4 negative). |
| 11 |
Not supported, consider buying an additional battery. |
| 10 |
Not supported, consider buying additional batteries. |
| 9 |
Purchase 3 x BB-3-12 busbar sets (3 positive, 3 negative) and a total of 6 45”-long 2/0 Arctic Ultraflex Blue® cables with 3/8” lugs included (3 positive, 3 negative). |
| 8 |
Purchase 4 x BB-2-12 busbar sets (4 positive, 4 negative) and a total of 8 45”-long 2/0 Arctic Ultraflex Blue® cables with 3/8” lugs included (4 positive, 4 negative). |
| 7 |
Not supported, consider buying an additional battery. |
| 6 or fewer |
Utilize the BOSS.6 or adhere to BOSS.6 wiring instructions if planning to expand beyond 6 batteries in the future. |
Terminal block-to-inverter cables come with the BOSS.12 purchase. SimpliPhi generally uses two (one positive, one negative), 96”-long 4/0 Arctic Ultraflex Blue® cables with 3/8” lugs included (one lug on each cable end), for connecting between the terminal block and the inverter’s DC busbars or plates.
Note: Arctic Ultraflex Blue® cables are rated according to the specifications listed at this link: http://www.polarwire.com/properties-specs.pdf.
- Arctic Ultraflex Blue® 2/0 AWG cable has a 325 Ampacity rating at 86°F (30°C)
- Arctic Ultraflex Blue® 4/0 AWG cable has a 440 Ampacity rating at 86°F (30°C)
CAUTION: The two (one positive, one negative) 4/0 AWG Arctic Ultraflex Blue cables (each rated at 440A) typically provided with the BOSS.12 are insufficient for utilizing the FULL instantaneous continuous current output of all 12 PHI batteries (450ADC combined).
