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Fuse should be rated to around 15-20A, fast blow. Should probably use the same Cooper-Bussman series as we are using for the actual car. Need to find purchase and get the fuses. Ask Joshua Rong for more details on fuses.
Selected the Cooper Bussman XEV10-20-T for its fuse rating of 20A which will protect against short circuits but not interrupt normal operation. Wiring must be sized according to this fuse - must be capable of >20A. Using the Chassis Wiring value from this table:https://www.powerstream.com/Wire_Size.htm, >16AWG wire will work (22A). We will go with 14AWG (32A) for a bit of a safety factor for all of the fuse derating conditions if it is readily available and not too much more expensive.
We will need to find a place to purchase this fuse.
Contactors
- Charge Input +
- Output (Motor Controller) +
- Common GND Side -
- Secondary contactor to emulate the coil sense contactor, coil wired in parallel with main contactor
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We should be able to manually turn the battery on or off. Should be rated for at least 20A, probably more for a safety factor. Should also be satisfying to turn on - big switches are nice.
This switch will be inline with positive side of the battery.
Current Sense
Should we have the option of switching in a larger current sense resistor to measure the current more accurately - then we might not have to change current set points when switching code as the reading scales according to the resistor chosen.
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