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Code of Federal Regulations Title 46. Shipping § 46.111.05–31 Grounding conductors for systems

Current as of January 02, 2025 | Updated by Findlaw Staff

(a) A conductor for grounding a direct-current system must be the larger of:

(1) The largest conductor supplying the system;  or

(2) No. 8 AWG (8.4mm2).

(b) A conductor for grounding the neutral of an alternating-current system must meet Table 111.05–31(b).

TABLE 111.05-31(B)—NEUTRAL GROUNDING CONDUCTOR FOR ALTERNATING-CURRENT SYSTEM

Size of the largest generator cable or equivalent for parallel generators—AWG-MCM (mm2)

Greater than

Less than or equal to

Size of the system grounding conductor—AWG(mm2)

2 (33.6)

8 (8.4)

2 (33.6)

0 (53.5)

6 (13.3)

0 (53.5)

3/0 (85.0)

4 (21.2)

3/0 (85.0)

350 MCM (177)

2 (33.6)

350 MCM (177)

600 MCM (304)

0 (53.5)

600 MCM (304)

1100 MCM (557)

2/0 (67.5)

1100 MCM (557)

3/0 (85.0)
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Cite this article: FindLaw.com - Code of Federal Regulations Title 46. Shipping § 46.111.05–31 Grounding conductors for systems - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-46-shipping/cfr-sect-46-111-05-31/

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