Campervan electrics
I am currently rebuilding a Fiat Ducato van into a campervan. For the electrical system we want to use a 230v fridge, a roof fan, Led lights and some smaller accesoires such as usb chargers etc.
A rough estimate of powerusage:
Watt |
Hours p/d |
Wh |
Ah @12v |
|
Fridge 230v |
20 |
24 |
480 |
40,0 |
Usb |
14 |
1,4 |
19,6 |
1,6 |
Lights |
20 |
3 |
60 |
5,0 |
Fan |
35 |
6 |
210 |
17,5 |
Laptop/bikechargers etc. |
90 |
1 |
90 |
7,5 |
Waterpump |
100 |
0,5 |
50 |
4,2 |
Total |
909,6 Wh |
75 Ah |
Adding losses, I estimate a bit less than 100Ah/day.
Charging
- Multiplus 800VA
- Orion DC/DC smart 18A or 30A
- Mppt 75/15 with +- 200Wp solar
Storage
The intended use of the camper van is to travel around, stay a day or to and then move again. so alternator charging and solar should be most of the charging required. Going with a multiplus is a nice to have, as adding a charger later would require a lot of components if I buy a separate inverter.
I am still looking into what I can afford,100Ah lithium sounds great, but 220Ah AGM is also reasonable for our uses. Due to a smart alternator a DC/DC charger seems needed anyways, so all should be easily set up for both chemistries. We’d prefer using a 12v system, as this is commonly used.
Do you have any remarks on this schematic?
(Apart from the not displayed safety on the 230v AC, and the non-calculated wire gauge.)
My question;
Can I combine the Multiplus, orion smart and mppt without a shunt or GX device or is this not advisable? As far as I can tell this is mostly for monitoring?
The multi and orion won't interfere with the ignition switch used, so it is mainly the communication between the MPPT and other chargers that could be problematic?
Thanks in advance!
Bram
