New Project

Mr Googler

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Wiring today!

OE was 40mm2 cable but I’ve gone 50mm2.

4 x batteries that where wired 1 for each engine and 2 house. The batteries had to be bridged every time for starting and still chewed up a few starters apparently! Bugger that there is minimal 12v items on board really so I’ve made 4 batts into 2 banks. Engines will have a bank each and one side doubling as house. Pretty standard.

the KAD44p-b needs separate ve+/- to feed ECU as previously discussed.

I have 2 solenoid isolators each side. A big 250 amp for starter and 100 amp for the ECU/ house…..that’s continuous rating.

F685C157-1D91-4A5E-AC6A-4D4A3117526D.jpeg
DD07CD72-E72F-4E2D-B5EB-BE392FFA8E58.jpeg

It’s hard to know who long the cables need to be at the engine side so went fairly long. I’ll have no room once they are back in but should be able to snip and shorten if required.

Ive gone back to the awesome Victron Bluesmart charger and a VSR. The charger is single output 30 amp. No need for a 3 output version as they are 30amp total …not per output. The VictronConnect app is great and negates the need for a display in the cabin…..it’ll be on the android stereo/headunit ? The VSR joins the batteries anyway when the voltage is over 12.8v. This also happens when the engine is running which helps as the other side is engine/house so will charge it up if a flatten it.

I bought a hydraulic crimper…..it’s awesome. Joints are then heat shrinked. I’m keeping cable runs as short as possible and I think it’ll work much better. Couldn’t be worse…..the engine starter run was 6 metres previously ???

BE993FB6-AC74-4B25-9D12-94B820B81429.jpeg
 
Last edited:

Bouba

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Wiring today!

OE was 40mm2 cable but I’ve gone 50mm2.

4 x batteries that where wired 1 for each engine and 2 house. The batteries had to be bridged every time for starting and still chewed up a few starters apparently! Bugger that there is minimal 12v items on board really so I’ve made 4 batts into 2 banks. Engines will have a bank each and one side doubling as house. Pretty standard.

the KAD44p-b needs separate ve+/- to feed ECU as previously discussed.

I have 2 solenoid isolators each side. A big 500 amp for starter and 250 amp for the ECU/ house…..that’s continuous rating.

View attachment 133317
View attachment 133320

It’s hard to know who long the cables need to be at the engine side so went fairly long. I’ll have no room once they are back in but should be able to snip and shorten if required.

Ive gone back to the awesome Victron Bluesmart charger and a VSR. The charger is single output 30 amp. No need for a 3 output version as they are 30amp total …not per output. The VictronConnect app is great and negates the need for a display in the cabin…..it’ll be on the android stereo/headunit ? The VSR joins the batteries anyway when the voltage is over 12.8v. This also happens when the engine is running which helps as the other side is engine/house so will charge it up if a flatten it.

I bought a hydraulic crimper…..it’s awesome. Joints are then heat shrinked. I’m keeping cable runs as short as possible and I think it’ll work much better. Couldn’t be worse…..the engine starter run was 6 metres previously ???

View attachment 133319
Well done Mr G? I see that you have upped your game since reading JOHNPEET’s thread...
 

vas

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Mr google,
On my mobile, slightly confused, are the two relays only going to be pulled for starting the engines, or are they going to be permanently on when onboard? They don't seem to be bistable ones to me so will be constantly consuming some current (not insignificant!)
Check it out please

V
 

Chris_d

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Mr google,
On my mobile, slightly confused, are the two relays only going to be pulled for starting the engines, or are they going to be permanently on when onboard? They don't seem to be bistable ones to me so will be constantly consuming some current (not insignificant!)
Check it out please

V
Yes that big one is an Albright SW200, at work we use those for starting racing cars, they need 5A-10A just hold them on so only suitable for short period use.
 

Bouba

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IP66………if it needs IP67 I’m swimming! ??
Well...I wasn’t going to say....some of your electrical equipment is attached to the wooden pads that are glassed onto the hull..but other relays look like they are screwed directly into the hull...so to answer your dilemma...it depends on what screw length you used?
 

Mr Googler

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Mr google,
On my mobile, slightly confused, are the two relays only going to be pulled for starting the engines, or are they going to be permanently on when onboard? They don't seem to be bistable ones to me so will be constantly consuming some current (not insignificant!)
Check it out please

V

The plan was to use them as isolators so on all the time

Yes that big one is an Albright SW200, at work we use those for starting racing cars, they need 5A-10A just hold them on so only suitable for short period use.

The big one is a SU280-1180p. The data sheet is below. Firstly….I didn’t know I had to mount them studs up so I’ll change that. From the sheet and I really need help here……I read the continuously coil draw is 10-15 watts…..or 0.8-1.5 amp. Have I cocked up?

24B9692F-A2AA-41BF-B7C3-9CCD735AF024.jpg

the 2nd one is this one

4940E53A-6660-44EF-B84D-B682FF07D1FD.jpg
 
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