[londons_explore]

48V electrical system should help a lot too, due to lower currents, and therefore less resistive heating.

Lots of fires (in all types of car) are due to bad connections in the low voltage system.

[CyberDildonics]

That's an interesting point, but how would a higher voltage not cause the same problems with bad connections?

[I_Am_Nous]

It's related to Ohm's law, but if you have a specific load you need to power (say 8 watts) a 12 volt system can run that using 0.6 amps (at 18 Ohm) while a 48 volt system can run that same 8 watt load at 0.16 amps (at 288 Ohm).

Another way to look at it is a little easier with something like a 24 volt PoE injector vs a 48 volt PoE injector. The 24 volt supplies the needed energy at 1 amp, but the 48 volt supplies the same energy at 0.5 amps. Both work out to 24 watts (volts*amps=watts) but a wire carrying 48 volts doesn't generate as much resistance, which would be lost as heat into the wire carrying the load. If it loses too much heat because the resistance is too high, well, that's how you make a heating element -- cram amperage into a wire until the resistance makes it hot.

[londons_explore]

For example a 960 watt fan - fairly typical of the cabin air fan, at 12 volts would need 80 amps, whereas at 48 volts would need only 20 amps. (Power in watts = Current in Amps * Voltage)

If you have a bad connection in that cable of 0.01 ohms, then that bad connection would generate 64 watts of heat on the 12v/80a system (enough to melt the plastic on the cable and start a fire), whereas on the 48v/20a system it would only make 4 watts of heat (probably safe). (Power in Watts = Current in Amps Squared * Resistance in Ohms).

[brewtide]

Bad connections are far more prone to get worse, rapidly (and arc themselves bigger...) When larger amounts of current need to go through them.

All connections need to be nicely done -- the ones on your range plug, they should be very snugged, and double checked.

Etc. lugs on a 200 amp home service panel are ON there.