Crimp
Get started - free

Blue Sea Systems

Blue Sea 8100 AC ELCI Main Circuit Breaker Panel 30A 120V connections

Review the Blue Sea 8100 AC ELCI Main Circuit Breaker Panel 30A 120V catalog ratings, AC connection points and installation notes, then add the part to your Crimp diagram.

View connectionsEdit this connection overview
Nominal voltage
120 V
Units

Connection overview

ELCI breaker 30A 120V connections.

See how this component fits into a system. Use the manufacturer’s installation instructions for the complete connections.

Blue Sea 8100 AC ELCI Main Circuit Breaker Panel 30A 120V connection overview with 3 components: ELCI breaker 30A 120V, Protected shore supply, 120 V vessel circuits. 6 cable connections. Crossings are not junctions.Protected shore supply L to ELCI breaker 30A 120V LINE L. Protected shore supply N to ELCI breaker 30A 120V LINE N. Protected shore supply PE to ELCI breaker 30A 120V EARTH IN. ELCI breaker 30A 120V LOAD L to 120 V vessel circuits L. ELCI breaker 30A 120V LOAD N to 120 V vessel circuits N. ELCI breaker 30A 120V EARTH OUT to 120 V vessel circuits PEProtected shore supply L to ELCI breaker 30A 120V LINE LProtected shore supply N to ELCI breaker 30A 120V LINE NProtected shore supply PE to ELCI breaker 30A 120V EARTH INELCI breaker 30A 120V LOAD L to 120 V vessel circuits LELCI breaker 30A 120V LOAD N to 120 V vessel circuits NELCI breaker 30A 120V EARTH OUT to 120 V vessel circuits PEBlue Sea 8100 AC ELCI Main Circuit Breaker Panel 30A 120V. Common shore-power arrangement with separate line, neutral and protective earth. Protection blocks represent the complete main/branch protection arrangement, not individually sized breakers. Follow the applicable mains installation and bonding instructions. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.ELCI breaker 30A 120VLINE LLINE LLINE NEARTH INEARTH INLOAD LLOAD LLOAD NEARTH OUTEARTH OUTProtected shore supply. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.Protected shore supplyLLNPEPE120 V vessel circuits. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.120 V vessel circuitsLLNPEPE
Blue Sea 8100 AC ELCI Main Circuit Breaker Panel 30A 120V connection overview with 3 components: ELCI breaker 30A 120V, Protected shore supply, 120 V vessel circuits. 6 cable connections. Crossings are not junctions.Common shore-power arrangement with separate line, neutral and protective earth. Protection blocks represent the complete main/branch protection arrangement, not individually sized breakers. Follow the applicable mains installation and bonding instructions. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.
Edit this connection overview

Installation notes

Before you install.

Open a question for model-specific guidance and sources.

Verified against the manufacturer's documentation (rev. 980006510 Rev 002; supplementary ELCI bulletin IST-0006 Rev B), checked 2026-10-01. Manufacturer documentation →

What does this panel protect?

The 8100 panel is a 120 V AC, 30 A double-pole shore main with 30 mA leakage trip. It monitors imbalance between current leaving and returning through the AC circuit. It is not a DC breaker, an AC source selector, or a substitute for required branch-circuit GFCI protection.

How are line, neutral and earth routed?

Connect the shore supply to LINE and the vessel distribution to LOAD, maintaining separate line and neutral poles. Protective earth remains continuous through the grounding bus; never join it to the downstream neutral bus. Panel instructions explain the distinction. Reverse line/load connections or another supply backfeeding LOAD can damage the ELCI.

Where should it be installed?

The manufacturer places the main disconnect within 10 ft of the inlet measured along the conductors; longer runs require additional inlet-side protection. Its 30 A feeder recommendation is 10 AWG under the documented installation conditions. Protect front and rear from water. The panel is not ignition protected and must not be installed where explosive vapors accumulate.

How is protection verified?

With power present, turn it on and operate TEST. The ELCI bulletin requires a monthly trip test and replacement if the test fails to open the breaker. If it trips in service, disconnect branch loads and identify the circuit causing imbalance rather than bypassing protection. Check reverse-polarity indication before accepting shore power. Keep all alternative AC sources isolated during installation or fault investigation.

Fit check

Connect it to the rest of your system.

Describe your setup to draft an AC connection overview with 8100. Review the equipment, conductors and installation requirements before adapting the drawing.

This is a connection overview. Crimp does not calculate AC load flow or verify AC protection, automatic tripping or grounding. No calculated cable or fuse reference is provided on this page.

Enable JavaScript to describe your system.

Technical reference

Specifications and terminal map.

Check the model, ratings and connection points against your own unit before choosing installation hardware.

Catalog specification

120VAC 30A double-pole shore main panel with 30mA leakage trip and reverse-polarity indicator. Line and neutral are separate switched poles; protective earth remains separate. This is AC equipment, not a 12V DC fuse panel or a source selector.

Nominal voltage
120 V

Terminal map

Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.

LINE L

neutral · input

30 A

LINE N

neutral · input

30 A

EARTH IN

ground · bidi

30 A

LOAD L

neutral · output

30 A

LOAD N

neutral · output

30 A

EARTH OUT

ground · bidi

30 A
Sources and connection guidance

Equipment specifications. Model details, ratings and terminal roles come from the catalog. Check your unit’s label and current manufacturer documentation for its exact revision.

AC planning boundary. The drawing identifies conductors and connection points; supported switching states show contact continuity only. Crimp does not calculate AC load flow or verify fault protection, leakage trips, source isolation or grounding. This overview does not calculate cable sizes or validate protective devices. Follow the complete manufacturer installation instructions.

Read about the DC sizing method and its limits

Related components

More distribution to explore

Browse all distribution profiles
Blue Sea SystemsBlue Sea 285-Series 60A Breaker7184Blue Sea SystemsBlue Sea 3091 AC ELCI Circuit Breaker 16A 230V3091Blue Sea SystemsBlue Sea 4151 Momentary SPST Switch4151Blue Sea SystemsBlue Sea 4152 SPDT Center-Off Switch4152Blue Sea SystemsBlue Sea 4155 DPDT Center-Off Switch4155Blue Sea SystemsBlue Sea 5025 ST Blade Fuse Block5025

Next step

Plan your installation with ELCI breaker 30A 120V.

Open the connection overview as a new project, or add this component to a diagram you already have.

Edit this connection overviewAdd just this component

Start drawing, sizing and checking without an account. Your drawing saves in this browser. See Pricing for the equipment allowance and the one-time export offer available to you.