carmencina
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Re: Wiring diagram - Find my mistakes!
Thanks for your contribution guys and please forgive my inexperience regarding image posting, will do that next time. Is China shore voltage 220 Volts or 120 Volts? It's 220v. @CA Traveler: Thanks a lot, your answer is super helpful! What is the reason for the DC-DC charger? The chassis/starter battery is lead acid, the house battery is Lithium, so I read the safe only way to charge the second from the first is to use a DC-DC charger instead of relays so that it can keep a steady 14.6v charge. Your solar has both 10 and 6 ga wires, should be the same. You've hit a painful spot! I am building this van in the countryside with limited tools and shops, everthing must be ordered online and it takes days to arrive, so I asked the solan panel company to wire the panels for me to save time. I asked for 10 AWG cables but later I thought I had made a mistake because I only calculated half the wire lenght so, despite myself, I thought I had to rewire the "long sides" with 6 AWG cables. But from your reply I understand my first calculation (10 AWG) was probably correct, right? Here are the panel specs of each panel (translated from Chinese, no instruction manuals, only a minimal label on the back): Peak power: 300W Open circuit voltage: 22.5V Short circuit current: 16. 6A Working voltage: 18V Working current: 15.5A Total length of the cables is 3+3=6m (20ft). As they are in a series, the max current going through them is 16.6A? Wires should be as short as possible From the MPPT to the battery there will be 40.8A and max 1ft distance, so I chose 6 AWG. From the inverter (1000w) to the battery I expect 100-120A max so 2 AWG should be enough but I wanted to cover for unexpected peaks up to 2000w if the CB fails so I chose 2/0 AWG. Useless? the red AC wire grounded My bad, I meant to connect the ground to the black cable in the diagram. Thanks again!851Views0likes0CommentsWiring diagram - Find my mistakes!
Dear Community, I am at the initial phase of my camper van conversion in China, in which I am planning to live and work together with my wife. Camper vans in China are not popular though they produce any kind of devices and gadgets one might search for this purpose. I am not bad at DIY and woodwork but my electric knowledge is limited. I have been researching a lot in the last weeks to plan the wiring diagram that you see below. Despite my best efforts, I am sure there are mistakes that I cannot see and I hope some more expert eyes will help me avoid potential disasters! Image: ibb.co/R72QvmR (please copy and paste the link to see my diagram) I would greatly appreciate any help or suggestions, especially in terms of cable and fuse sizes. What mistakes can you find? (The simple software I used didn’t have many icons, so the 12v fuse box looks like a normal breaker.) Also, can I just use (magnetic) circuit breakers instead of fuses a bit everywhere (except the 12v box)? I also don’t understand why I should use one or another kind of breakers/fuses so I would simply go with the circuit breaker kind you see in the icons. Thanks and safe travels!2.2KViews0likes10Comments
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