Rlsimon804
1 mW
Class T fuse sizing
After reading through posts it looks like class T is the go to for lifepo4 builds. I’m hoping to get some sizing opinions from some of the much more knowledgeable people here.
Polaris Ranger 48v EV
Sevcon 650 amp controller
Two home brewed 16S/48V packs paralleled. Made with 74AH cells (180c,600 pulse)
Each will have its own BMS. 300c/600p
People who have converted these utv’s say they rarely see 400 amps. Briefly on long, steep grades wide open but possible. The controller is fused at 250 amps from the factory with the LA batteries. Seems I need a fuse between each battery and the bus bar and between the bus bar and controller. What sizes would I need? Main priorities are safety and reliability. I don’t want cut it too close and start burning $50-&100 fuses but I definitely wouldn’t want to burn my shop down! I’m open to any suggestions or alternatives.
After reading through posts it looks like class T is the go to for lifepo4 builds. I’m hoping to get some sizing opinions from some of the much more knowledgeable people here.
Polaris Ranger 48v EV
Sevcon 650 amp controller
Two home brewed 16S/48V packs paralleled. Made with 74AH cells (180c,600 pulse)
Each will have its own BMS. 300c/600p
People who have converted these utv’s say they rarely see 400 amps. Briefly on long, steep grades wide open but possible. The controller is fused at 250 amps from the factory with the LA batteries. Seems I need a fuse between each battery and the bus bar and between the bus bar and controller. What sizes would I need? Main priorities are safety and reliability. I don’t want cut it too close and start burning $50-&100 fuses but I definitely wouldn’t want to burn my shop down! I’m open to any suggestions or alternatives.
Which ones are more relevant depends on what you want the fuse to protect.
