Hi, I am building a system with 4x 6548 in 2x2 split phase config connected to a bank of 4x Trophy 48V batteries.
I want to be able to charge an EV at up to 10 kW without maxing out the system if the electric water heater or A/C is on (hence the somewhat excessive 4x 6548's instead of 2, and can't go with only 3x because I need split phase).
What is the recommended wire size in this situation for battery to busbar for short distances (less than 5 feet)? 2/0 or 4/0?
Busbar to inverter? 2/0? Is a 200a fuse to each inverter (between the busbar) still sufficient (theoretically 135A draw per inverter split between 4x for max draw)?
Also, for now I'm going with a 4 stud 300A busbar to get started (affordable options for larger busbars were out of stock). Currently, I only have a Nissan Leaf which charges at 6.2 kW. However I assume I should upgrade this when I actually get to the point where I potentially need the extra 4kW of draw for a newer EV without minding other system loads?
If the batteries are rated at 100A, I assume a 600A busbar is large enough to prevent excessive heating of the busbar? Also if I were to get an 8 stud 600A bar, I should theoretically be able to add 2x more 48V batteries before exceeding the capacity of the busbar? Actually, is it ok to double 48V batteries on one stud or should I be sticking to 1 stud per battery?
I want to be able to charge an EV at up to 10 kW without maxing out the system if the electric water heater or A/C is on (hence the somewhat excessive 4x 6548's instead of 2, and can't go with only 3x because I need split phase).
What is the recommended wire size in this situation for battery to busbar for short distances (less than 5 feet)? 2/0 or 4/0?
Busbar to inverter? 2/0? Is a 200a fuse to each inverter (between the busbar) still sufficient (theoretically 135A draw per inverter split between 4x for max draw)?
Also, for now I'm going with a 4 stud 300A busbar to get started (affordable options for larger busbars were out of stock). Currently, I only have a Nissan Leaf which charges at 6.2 kW. However I assume I should upgrade this when I actually get to the point where I potentially need the extra 4kW of draw for a newer EV without minding other system loads?
If the batteries are rated at 100A, I assume a 600A busbar is large enough to prevent excessive heating of the busbar? Also if I were to get an 8 stud 600A bar, I should theoretically be able to add 2x more 48V batteries before exceeding the capacity of the busbar? Actually, is it ok to double 48V batteries on one stud or should I be sticking to 1 stud per battery?