#### Re: Supermaramu wire sizes?

Dan,

Yes, the Amels that I have seen have increased the size of the wiring.

You might want to look at this:https://www.batterystuff.com/kb/tools/dc-to-ac-amperage-conversion-run-through-an-inverter.html
3000 watts = 13.64 amps of 220 volts:

So the short answer is, assuming that the 24 volt wiring for the 100 charger watt was designed for 100 amps. You should NOT use that wire because you should expect a maximum of around 140 amps. Not good! So, replacement is going to be required. Since replacement is required, calculate the wiring size needed for the inverter/charger using an online calculator...here is one:  https://www.solar-wind.co.uk/info/dc-cable-wire-sizing-tool-low-voltage-drop-calculator

I am not sure about the length of the cable run...I used 12 feet...it could be 15 feet.

The result above shows required wire is 120 mm2 = 12.4mm diameter, which is about 1/2" diameter

Hope this helps.

--
 CW Bill Rouse Amel Owners Yacht School Address: 720 Winnie, Galveston Island, Texas 77550  Website:

On Sat, Nov 23, 2019 at 11:30 AM Dan Carlson <carlsdan61@...> wrote:
Hi Bill, yes I'm well aware of the different cable sizing standards.  But was looking for the reference data for the actual cables in the SM.

The existing cables are well shielded and have shrink wrap covering right up to the terminal lug so the actual wire is not accessible for direct measurements.

I am just trying to understand the sizes with respect to the various loads.  Several of boats have talked  of replacing the original Dolphin 100A with a 3000watt Victron Multi or Quatro and I wanted to understand the impact in terms of current load and voltage drop potential.

Regards, Daniel Carlson

On Fri, Nov 22, 2019, 7:04 PM CW Bill Rouse <brouse@... wrote:
Dan,

I am sure that you know this: In Europe the wire is sized in square mm.

You might want to measure the diameter of the existing wire, calculate the area of the cross-section in square mm, then if you need AWG, use an online conversation chart to get to AWG. Here is one:

Best,

CW Bill Rouse
Amel Owners Yacht School - www.AmelOwnersYachtSchool.com
720 Winnie St
Galveston Island, TX 77550
+1(832) 380-4970

On Fri, Nov 22, 2019, 5:32 PM Dan Carlson <carlsdan61@...> wrote:
Hello SM owners,

Does anyone know the original
wire sizes for the following:
1) 100 amp charger to battery switch
2) 30 amp charger to battery switch
3) Battery switch to bow thruster

The wiring does not appear to be labeled. And I'm not a good judge by eye.

I'm in Panama right now trying to search the forum from my phone with my cell connection isn't working for me.

Thanks and regards, Daniel Carlson on SM #387, sv BeBe

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