Circuit breaker for a Lofrans Falkon

[Pelagic]

Originally Posted by Paul L

The breaker does NOT measure or trip based on the cable temperature. It trips based on the current passing through the breaker. So if the windlass motor draws in excess of the breaker rating for a period the breaker will trip.

Thanks Paul. I knew someone would explain better z

[Paul L]

Originally Posted by Pelagic

Thanks Paul. I knew someone would explain better z

Thanks for the correction. It should read as you edited NOT

[blueazimuth]

Yes, you need to upgrade the breaker to the recommended 125A.

And you also need to verify that the existing power cables will handle 125A. I suspect they will have to be upgraded.
Remember, when calculating the correct cable size, you must use DOUBLE the run from battery to windlass. Use the 10% voltage loss table.

[SVTatia]

Originally Posted by blueazimuth

Yes, you need to upgrade the breaker to the recommended 125A.

And you also need to verify that the existing power cables will handle 125A. I suspect they will have to be upgraded.
Remember, when calculating the correct cable size, you must use DOUBLE the run from battery to windlass. Use the 10% voltage loss table.

As per post # 7.

[sailing_gal]

What is weird is I can't find 125A, only 120A, even through Life and. I have battery cable for the run, so plenty thick cable.

Thank you all.