finally wired!

[starchy]

the battery side of things, at least. just gotta haul it out into the van and connect the solar charge controllers. how's it look? did i screw anything up? i've been too afraid to turn on the batts and test the inverter...

 

[Bud Martin]

Are those small red wires for powering small devices, I.E. Victron shunt? If it does, you should install small in line fuse in case has short circuit so the small wires will not catch on fire.

 

[Zil]

?? Every positive wire appears to be fused. At least in the diagram. I didn't even try to sort the rats nest.
I would use something other than the ANL fuse on LiFePo battery. Recommend Class-T closer to battery positive.

 

[HRTKD]

All the wires need some strain relief to keep them from moving around. Vibration can make the connections come loose.

 

[Zil]

strain. I thought the bicycle did that.

 

[timselectric]

I don't think that the bicycle can handle that much power.

 

[starchy]

Are those small red wires for powering small devices, I.E. Victron shunt? If it does, you should install small in line fuse in case has short circuit so the small wires will not catch on fire.

it's got an in-line fuse. i moved it to the first node of the positive busbar after taking these pics.

 

[starchy]

i ran a hair dryer on high for a bit and used my friend's infrared thermometer to scan everything. nothing registered above air temp, around 75, except the inverter itself which was about 5 degrees warmer.

also noticed that moments after turning everything off the busbars still register 2 or 3 volts and the 4/0 cables at the distributor and downstream still register 10 - 12 volts.

 

[timselectric]

Probably capacitor drain.

 

[Bud Martin]

I did not see that fuse shown in your wiring diagram. What is the size of that in-line fuse?

it's got an in-line fuse. i moved it to the first node of the positive busbar after taking these pics

 

[starchy]

1A

 

[starchy]

Probably capacitor drain.

k. over an hour later and still 2 volts at the busbars and 7volts elsewhere.

 

[timselectric]

k. over an hour later and still 2 volts at the busbars and 7volts elsewhere.

Seems to be dropping. Definitely appears to be capacitor draining down.

 

[Zil]

I took my monitor feed off my fuse block. Nice to have easy access to the ATO-ATC fuses if I want to disconnect. I have 18 awg and fuse for a bit more than 1 amp. I do have a second control circuit fed from that same fuse.

 

[starchy]

got everything loaded into the van. anyone know about recommended settings for LiFePO4 batteries? the manual doesn't list any. both for the epever mppt 40a solar charge controllers and the victron smart shunt. i've attached some recommended settings i found on reddit but i'm not sure how many cells these batts have so i don't know how to extrapolate. might make a separate thread about this...

 

[timselectric]

It's been discussed in many many threads, already.
Shouldn't be too hard to find.
But, I'm sure that someone will post it here, if you'd rather wait.

 

[HRTKD]

The Shunt should have a LiFePO4 setting option. That's a good start. It shouldn't assume 14.6 volts is a charged battery. My Victron devices usually go with 14.2 volts as being "charged".