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10.4 Cable Sizes
The following table shows the minimum cable size for different rated circuit breakers. However,
note that cables are typically larger than the sizes indicated to minimize voltage drop between
the battery and the load (to maximize battery autonomy).
The DC load cables must also comply with the following general specifications:
Conductor: Copper, stranded single-core
Temperature rating: 194°F (90°C) minimum
NOTE:
*Part numbers are for FCI-BURNDY® products. In the US or Canada, use these parts or
equivalent UL-listed crimp lugs.
Table 2 - Cable Sizes
Circuit
breaker
rating
Cable size
Metric cable
size
(equivalent
minimum)
Crimp
lug*
Crimping
Tool*
Crimp tool
die*
2A
14 AWG
2.5 mm
YAV14-T3
Y8ND
"N" type
4A
6A
10A
16A
20A
25A
12 AWG
4 mm
YAV10-T2
32A
10 AWG
6 mm
YAV9C-T4
40A
8 AWG
10 mm
YAV8C-L2
50A
6 AWG
16 mm
YAV6C-L4
BCT 500
WDA 8300
63A
4 AWG
25 mm
YAV4C-L4