rolandbremb
New Member
- Joined
- Jul 17, 2020
- Messages
- 27
Thanks!Hard (for me) to prove a negative - but nothing bad is jumping out. Couple of thoughts....
1) If you pull 200a @ 24v = 4800w from the battery bank (5kwh) it will be dead (100% DOD) in a hour.... maybe you don't plan on full load very often
2) You might want to add a shunt or at least some meters - so see what's happening. Those victron smart shunts that display to your phone seem pretty cool.
Good luck as you build your system
I run 2/0 (fine-strand flexible welding cable) for 250amps capability and routinely run 150a with 200a spikes with no detectable warmth - total length maybe 8feet from battery to inverter. Just blind advice - 2/0 would be better in my opinion. However, 2 or 2/0, the real test is to make sure the wire doesn't get hot under max load.One concern was around he wire size... do you think 2 AWG is enough? I've conflicting things about that, and was considering to upgrade to 2/0 AWG.
got it!I run 2/0 (fine-strand flexible welding cable) for 250amps capability and routinely run 150a with 200a spikes with no detectable warmth - total length maybe 8feet from battery to inverter. Just blind advice - 2/0 would be better in my opinion. However, 2 or 2/0, the real test is to make sure the wire doesn't get hot under max load.
It seems to me that you might want a way to remove power from the Positive Bus Bar as I do not know whether it is safe/desired to run the inverter directly from the output of the 12V to 24V DC-DC. The only cutoff is on the 200AH bank. There you show two 200AH batteries in parallel. Is this right as the total would be 400AH.Hi there!
currently planning out my electrical system, and would love to get some feedback on my wiring diagram... is this going to work out or will it blow up in my face? lol
View attachment 52338
I actually run the batteries in series, but I thought about the same. Thanks for pointing this out.It seems to me that you might want a way to remove power from the Positive Bus Bar as I do not know whether it is safe/desired to run the inverter directly from the output of the 12V to 24V DC-DC. The only cutoff is on the 200AH bank. There you show two 200AH batteries in parallel. Is this right as the total would be 400AH.
What are you using for the extra AC to DC 40a charger?Hi there!
currently planning out my electrical system, and would love to get some feedback on my wiring diagram... is this going to work out or will it blow up in my face? lol
View attachment 52338
thanks!What are you using for the extra AC to DC 40a charger?
The GW will give you 60a also.
Add a disconnect from solar to GW unit.
100 ampsquick question regarding BMS... I have 2 200ah LifePo4 batteries that I'll connect in series with a 100a BMS each. Is the maximum discharge rate then 200a (100a BMS + 100a BMS) * 24V ~4800W? or am I limited to 100a *24V because each BMS can only handle 100a??
just want to make sure I'm not missing something.
hmm... well I'll probably never use the max load anyway, and ~2400W is plenty100 amps
I understand what you want to do but unfortunately all current must pass thru both the BMS's in the series. If batteries are in parallel, each BMS can handle up to 100 amps.hmm... well I'll probably never use the max load anyway, and ~2400W is plenty
there's a couple options but I got the "Victron Energy Orion-Tr Smart 12/24-Volt"Looks excellent. I want to do the same thing but I'm having a heck of a time finding a 12/24v DC/DC converter for the truck alternator circuit. Would you mind telling what you're using? Thanks
thanks!I understand what you want to do but unfortunately all current must pass thru both the BMS's in the series. If batteries are in parallel, each BMS can handle up to 100 amps.
But you must remember that 100a times 24V is 2400 watts, the same as running two 12V batteries in parallel with BMS's at 100a each, (1200 watts times 2).
Some BMS manufacturers do not recommend series connection, contact your battery manufacturer first.
Sorry for coming to this thread late, but there's a lot of great info here! I'm designing my 24v system currently, and have a quick question about the above diagram.
Why not install a second alternator on your truck and use a 24VDC alternator regulator (mine is an adjustable regulator)? The normal 12V alternator will put out the nominal 24VDC without a problem (at least it did for me).Looks excellent. I want to do the same thing but I'm having a heck of a time finding a 12/24v DC/DC converter for the truck alternator circuit. Would you mind telling what you're using? Thanks