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Most common connection mistakes during electrical installation in boats

We on Thermo products gets often questions around electrical installations i boat, and it exists some common mistake that returns time on times. Many av they is simple to avoid – just one feels to what one will see up with. Here goes we through the most common mistakes and how you simple avoid they when you installs a system from Victron Energy.

1. For thin cabling

A classics. Uses you for thin cables i relation to current and the length, gets you voltage drop. It affects both charging and consumption negative. I Victron's manuals and calculation tool finds you clear guidelines for right cable size – use them!

2. Bad connections

Poor crimped cable lugs, loose screw joints or oxidized contacts is direct risky. They causes heat development and poor performance. Use always right press tool and invest on quality i both material and execution. I marine environments recommends we tin-plated cables.

3. Deficient or incorrect grounding

I Victron's system is correct grounding important – especially at usage av inverter, galvanic insulator or battery charger. Incorrect ground can cause disturbances, or i worst cases, dangerous voltages. Follow always Victron's installation instructions.

4. Misplacement or absence av fuses

The fuse will always sit so near of the battery positive terminal that possible. A common mistake is to place the fuse for long away, which make to the cable forward to the fuse becomes unprotected. Use quality products that Victron's Mega Fuse-holder.

5. None documentation

Without clear wiring diagram becomes troubleshooting and future expansion difficult. Mark up all cables, terminals and components. Save gladly a schedule digital and have also a paper copy onboard.

6. Fel on communication cables

Victron's system uses several different type av communication, for example VE.Direct, VE.Bus and VE.Can. It is important to to use right type av cable, i right port, and not mix signals. Use always original cables from Victron.

7. Fel polarity or voltage

Att connect error polarity or voltage (t.e.g. connect 24V on a 12V-system) is a common and costly errors. Double-check always before you make connection – gladly with multimeter.


Our tips

Always follow Victron's installation manuals
Use the right cable size
Invest in good tools and accessories
Document your installation
Don't hesitate to contact us if you are unsure

We at Thermoprodukter have long experience with Victron and helps gladly to with right solution for your boat. Contact us or someone av our dealer so helps we you find right from beginning.


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