1920 Detroit Electric Car Battery fuse question
1920 Detroit Electric Car Battery fuse question
(OP)
I am working on restoring a 1920 Detroit Electric Car. There were no fuses in the battery circuits and I want to install fuses.
The car has two battery packs, one in the front and one on the back, each battery pack is 42 volts DC with 240 amp/hour capacity.
From what I have been able to find out, the max amp draw may be 60 amps at starting when the front and back batteries are connected in parallel. I assume that once the car starts rolling the amps will drop.
I do not think I need to be concerned with time over current as much as having an instantaneous clearing of a short circuit.
Any thoughts and ideas would be appropriated since I am not familiar with the level of fault currents that can be produced by batteries.
The car has two battery packs, one in the front and one on the back, each battery pack is 42 volts DC with 240 amp/hour capacity.
From what I have been able to find out, the max amp draw may be 60 amps at starting when the front and back batteries are connected in parallel. I assume that once the car starts rolling the amps will drop.
I do not think I need to be concerned with time over current as much as having an instantaneous clearing of a short circuit.
Any thoughts and ideas would be appropriated since I am not familiar with the level of fault currents that can be produced by batteries.





RE: 1920 Detroit Electric Car Battery fuse question
Carry a couple of bigger fuses.
Mike Halloran
Pembroke Pines, FL, USA
RE: 1920 Detroit Electric Car Battery fuse question
RE: 1920 Detroit Electric Car Battery fuse question
'output' fuse you'd still be screwed.
Keith Cress
kcress - http://www.flaminsystems.com
RE: 1920 Detroit Electric Car Battery fuse question
Thanks for the reply. The DC system is not grounded. I think I need to fuse the + and -.
I will investigate the HRC fuse.