Q: How do I know what size I need?
A: For AllSpark Inverters this information is listed in the FAQ section of each listing, and below are some general sizing guidelines for popular chargers used in 12v installations. If you need help with sizing for another application please contact us.

Q: Are these breakers certified?
A: All models are certified to be compliant with SAE J1171 External Ignition Protection and SAE J553 Circuit Breakers. They are manufactured under strict quality management standards and certified to meet the requirements of IATF 16949:2016 and ISO 9001:2015.
You can be assured of buying a quality product that meets the very high standards expected to protect your circuits and vehicle from over excess current damage.
Q: Why would I use flush mounted over surface mounted?
A: Flush mounted circuit breakers provide a neat installation option for when the circuit breaker is being installed on a panel. They are mounted through the panel with the wiring being concealed behind. You need to ensure there is enough room behind the panel for the cabling and unit, please refer to the specifications tab to view dimensions.
Q: What cable size do I need for my circuit breaker?
A: Please refer to the specifications table for the recommended cable size for your circuit breaker.
CABLE, CONDUITS AND LUG SIZING CHART
| AWG/B&S |
Twin Core |
Single Core |
Copper Diameter (mm) per core |
Surface Area (mm2) per core |
Lug size (mm2) |
| Current Rating (Amps) |
Circuit Protection Max (Amps) |
Conduit Size (mm) |
Current Rating (Amps) |
Circuit Protection Max (Amps) |
Conduit Size (mm) |
| 2mm Auto Industry Equivalent |
12 |
7.5 |
5 |
13 |
10 |
5 |
1.10 |
0.56 |
Red crimps |
| 3mm Auto Industry Equivalent |
16 |
10 |
5 |
20 |
15 |
5 |
1.40 |
1.13 |
Red/Blue crimps |
| 4mm Auto Industry Equivalent |
22 |
15 |
7 |
28 |
25 |
5 |
1.30 |
1.84 |
Blue crimps |
| 5mm Auto Industry Equivalent |
29 |
20 |
10 |
37 |
30 |
5 |
2.30 |
2.90 |
Blue/Yellow crimps |
| 6mm Auto Industry Equivalent |
38 |
30 |
10 |
48 |
40 |
7 |
3.10 |
4.59 |
Yellow crimp/6mm lug |
| 8 B&S |
59 |
50 |
13 |
74 |
60 |
7 |
3.70 |
7.71 |
10 |
| 6 B&S |
82 |
70 |
15 |
103 |
80 |
7 |
5.00 |
13.50 |
16 |
| 4 B&S |
108 |
100 |
19 |
135 |
100 |
10 |
6.10 |
20.26 |
25 |
| 2 B&S |
Single core only |
188 |
150 |
13 |
7.90 |
32.07 |
35 |
| 0 B&S |
246 |
200 |
13 |
9.30 |
49.00 |
50 |
| 00 B&S |
292 |
250 |
16 |
11.10 |
64.15 |
70 |
| 000 B&S |
335 |
300 |
19 |
12.40 |
83.19 |
95 |
| 0000 B&S |
399 |
350 |
25 |
13.50 |
99.27 |
120 |
| This cable chart is provided for information purposes only. It is based on the published information for Tycab Australia Automotive cables which we use soley. |
How do I know what size I need?
For AllSpark Inverters this information is listed in the FAQ section of each listing, and below are some general sizing guidelines for popular chargers used in 12v installations. If you need help with sizing for another application please contact us.
Are these breakers certified?
All models are certified to be compliant with SAE J1171 External Ignition Protection and SAE J553 Circuit Breakers. They are manufactured under strict quality management standards and certified to meet the requirements of IATF 16949:2016 and ISO 9001:2015.
You can be assured of buying a quality product that meets the very high standards expected to protect your circuits and vehicle from over excess current damage.
Why would I use flush mounted over surface mounted?
Flush mounted circuit breakers provide a neat installation option for when the circuit breaker is being installed on a panel. They are mounted through the panel with the wiring being concealed behind. You need to ensure there is enough room behind the panel for the cabling and unit, please refer to the specifications tab to view dimensions.
What cable size do I need for my circuit breaker?
Please refer to the specifications table for the recommended
cable size for your circuit breaker.