Page 112 of 456 Installing DC power
Note 1: The frame ground collector cable is normally sized according to its length (distance between the main DC distribution cabinet and the FGB or BPG) as well as the maximum fuse or circuit breaker size that can be provided in the power plant. Refer to Table 3 for the recommended cable size for the Candeo power system.
Note 2: The frame ground drop into the Candeo frame must be the same size as the frame ground collector. The frame ground drop into battery stands, racks or stacks is usually #6 AWG.
Table 3
Recommended cable size for the frame ground collector
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| Recommended size | ||
Cable length |
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| (see notes 1 and 2 above) | |||
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0 to 6 m (0 to 20 ft) |
| #2 AWG |
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6 to 12 m (20 to 40 ft) |
| #0 AWG |
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12 to 24 m (40 to 80 ft) |
| #0000 AWG |
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24 to 50 m (80 to 160 ft) |
| #500 kcmil |
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Table 4 |
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Torque values for bolted connections (Part 1 of 2) |
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Bolt size |
| Threads/inch | Torque |
| Tension (lb) | |
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#8 |
| 32 |
| 18 |
| 625 |
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| 36 |
| 20 |
| 685 |
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#10 |
| 24 |
| 23 |
| 705 |
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| 32 |
| 32 |
| 940 |
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6 mm (1/4 in.) |
| 20 |
| 80 |
| 1840 |
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| 28 |
| 100 |
| 2200 |
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8 mm (5/16 in.) |
| 18 |
| 140 |
| 2540 |
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| 20 |
| 150 |
| 2620 |
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9.5 mm (3/8 in.) |
| 16 |
| 250 |
| 3740 |
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| 24 |
| 275 |
| 3950 |
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