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Old 01-31-2014, 05:57 AM   #21
Scraping Paint
City: Fort Lauderdale
Vessel Model: CHB 48 Zodiac YL 4.2
Join Date: Oct 2007
Posts: 3,804
Insulation type, location, length, voltage, acceptable voltage drop; are all considerations.

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Old 02-01-2014, 06:02 AM   #22
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Join Date: Oct 2007
Posts: 17,237
There is a huge difference in Ampacity between 4/0 and 0/4 wire.

Be sure of what you are looking at.

0/4 (usually good starter wire) wiring can be paralleled if required

The class T fuses come in sized for most 0/4 wiring.

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Old 02-01-2014, 06:15 PM   #23
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City: Bellevue, WA
Country: USA
Vessel Name: Fiddler
Vessel Model: DeFever 46
Join Date: Oct 2012
Posts: 533
Thanks for the comments and suggestions. Due to the varied opinions on the fuse size, I decided to contact a marine electrician to look at the setup and see what he recommended. He confirmed the fuse size is satisfactory to protect the cabling. So as it is now wired, I have two 8Ds for starting, one also powers the windlass, and they can be combined if necessary. The separate inverter bank powers the house and the hydraulic crane. There are individual batteries for the genset and the thruster. I also installed a battery monitor on the house bank to measure the SOC. The starters, genset, and thruster batteries are charged by the Victron 40amp/alternators, while the house/inverter bank is charged by the Magnum 125amp charger.

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