John Frum
Tell me your problems
- Joined
- Nov 30, 2019
- Messages
- 15,234
105 celcius refers to the temperature rating for the insulation on the wire.@smoothJoey " rated for 105c" - is this temperature rating or current (C rating of battery)?
We want the over current protection to trip before the wire insulation melts.
Also - can you explain the difference:
"25 mm wire with a 150 amp breaker is good for the battery wires.
25 mm wire with a 150 amp fuse is good for the main wire "
There will be 2 aggregation points(typically busbars) one for the positive side and the other for the negative side.
For each battery the wire going from the positive battery terminal should have a 150 amp quality breaker as close to the positive terminal as possible.
The breaker handles over current protection and gives you a means of manual disconnect.
The will be another wire going from the aggregation point to the rest of the system it should have a quality 150 amp fuse.
The system I am proposing looks like this
Code:
legend {
|U| = unfused busbar position
|F| = fused busbar postition
}
battery_0.pos<->breaker<->|U|
battery_1.pos<->breaker<->|U|
|F|<->growatt
battery_0.neg<----------->|U|
battery_1.neg<----------->|U|
|U|<->growatt
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