hi this is a general question about resistance of a wire...
If there is a 24v battery that can supply 500 amps (cca) and is rated a 80 ah, what is the best way to limit the flow to say 20 amps in a short circuit without affecting the voltage too much?
if the (short) circuit is protected by a 20a fusewire it will of course blow, but if the fusewire is extended long enough it will become a heating element and i guess increase the resistance due to heat.
my question is, if the short 20a fuse is kept cool by means of a very large/efficient heat sink to stop it blowing, would it throttle the flow of amps as required to 20?
alternatively, would a soda crystal solution (salt tank with large electrodes) always be the best way to limit dc current?
bert
If there is a 24v battery that can supply 500 amps (cca) and is rated a 80 ah, what is the best way to limit the flow to say 20 amps in a short circuit without affecting the voltage too much?
if the (short) circuit is protected by a 20a fusewire it will of course blow, but if the fusewire is extended long enough it will become a heating element and i guess increase the resistance due to heat.
my question is, if the short 20a fuse is kept cool by means of a very large/efficient heat sink to stop it blowing, would it throttle the flow of amps as required to 20?
alternatively, would a soda crystal solution (salt tank with large electrodes) always be the best way to limit dc current?
bert