555.35 GFPE and GFCI at marinas
What changed in 555.35
Shore power receptacles each need their own 30 mA GFPE, dock feeders and branch circuits need 100 mA GFPE, and marinas with four or more shore power receptacles must keep and use a leakage tester.
Point by point
- Every shore power receptacle gets its own GFPE device that trips at 30 mA or less.
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- 4 more points on exactly what changed
- The 2017 rule next to the 2020 rule, side by side
- Why it changed
- What to do and check on the job
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This section across NEC® editions
2020 NEC®RevisedYou're here
Shore power receptacles each need their own 30 mA GFPE, dock feeders and branch circuits need 100 mA GFPE, and marinas with four or more shore power receptacles must keep and use a leakage tester.
2023 NEC®Revised
Dock GFPE and GFCI rules were reorganized and widened, boat hoist GFCI moved in, and leakage current measuring devices must be listed starting January 1, 2026.
Open the 2023 page →2026 NEC®Revised
Ground-fault rules now cover piers, add alarm monitoring for fire pumps, and require GFPE coordination and performance testing.
Open the 2026 page →More 2020 changes in Article 555
This is a plain-English summary, not the NEC®'s exact wording. Always check the full section in the NEC® edition your area has adopted, plus any local amendments.
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