I now have 300w solar on roof and a Votronic 350 Duo solar regulator and am looking to make use of its AES output. I hoping to hear from someone who has already done this on a Globecar PVC.
The aim is to connect the AES Votronic output to the S+ terminal on the fridge.
A ) Cable sizing? The Dometic 9335 manual says it consumes 170w at both 240v and 12v. If my assumptions and arithmetic is correct (not a given!) 170w at 12v means the cable could be carrying a little more than 14amps when at full capacity. So I could use 4mm squared cable? If so, the 12v Planet sizing guide suggests a voltage drop of 0.68v or 5.7% over a 10m round trip run - hardly adequate? Taking the round trip out of the equation (because the return path would be via the fridge's own earth) would bring voltage drop to under the recommended
% and suitable for the job. However, I'm beginning to doubt my assumptions because the 4mm2 cable hardly fits into the Votronic's terminal, indicating that a smaller cable size is intended?
B ) I assume I should fuse my cable at 15amps? Or 20amps?
C ) Routing. The most viable routing appears to be from the passenger seat base, under the driving seat floor, up the B pillar, behind the Control Panel, behind the over-sink cupboard behind and above the fridge and then down behind the fridge to the void behind the external fridge cover, which gives access to the fridge's 240v a/c supply. A normally closed relay could then be fitted between the AES supply and the S+ terminal on the fridge, breaking the 12v Votronic supply when the EHU is live. (This routing is what gives rise to the >=5m cable length from the Votronic AES output to the S+ terminal, via the relay.)
(I'm not hoping to hear about irrelevant ideas like "why don't you get a cold box instead" or similar!)
The aim is to connect the AES Votronic output to the S+ terminal on the fridge.
A ) Cable sizing? The Dometic 9335 manual says it consumes 170w at both 240v and 12v. If my assumptions and arithmetic is correct (not a given!) 170w at 12v means the cable could be carrying a little more than 14amps when at full capacity. So I could use 4mm squared cable? If so, the 12v Planet sizing guide suggests a voltage drop of 0.68v or 5.7% over a 10m round trip run - hardly adequate? Taking the round trip out of the equation (because the return path would be via the fridge's own earth) would bring voltage drop to under the recommended
% and suitable for the job. However, I'm beginning to doubt my assumptions because the 4mm2 cable hardly fits into the Votronic's terminal, indicating that a smaller cable size is intended?B ) I assume I should fuse my cable at 15amps? Or 20amps?
C ) Routing. The most viable routing appears to be from the passenger seat base, under the driving seat floor, up the B pillar, behind the Control Panel, behind the over-sink cupboard behind and above the fridge and then down behind the fridge to the void behind the external fridge cover, which gives access to the fridge's 240v a/c supply. A normally closed relay could then be fitted between the AES supply and the S+ terminal on the fridge, breaking the 12v Votronic supply when the EHU is live. (This routing is what gives rise to the >=5m cable length from the Votronic AES output to the S+ terminal, via the relay.)
(I'm not hoping to hear about irrelevant ideas like "why don't you get a cold box instead" or similar!)
