So, the car electrical system, is way more than, just the stuff you see under the hood.
Consequently, apart from the main charging, starting and ignition circuits, there are many other circuits.
All electrical circuits in vehicles, are opened and closed; either by switches or relays and fuses are used to prevent them from overloads.
The car electrical system, is very complex and has wires running off it; at intervals to connect with components that require power.
Many of these circuits power:
- Engine cooling fan.
- The sensors and gauges, of electrical instruments.
- Heating elements.
- Magnetically operated locks.
- The radio.
- Fuel pump.
How Do We Measure This Information
So, modern cars have, a 12 volt battery. Consequently, a batteries capacity is measured in, amp/hours. So, a 56 amp/hour battery, should be able to deliver, a current of 1 amp for 56 hours. However, if the battery voltage drops, less current flows and eventually; there is not enough to make the components work.
Short Circuits And Fuses
So, the current in a wire, may become dangerously high and melt the wire or cause a fire. Therefore, to guard against this, ancillary circuits have fuses. The sudden surge of high current, in a short circuit; makes the fuse wire melt or ‘blow’, breaking the circuit. When this happens, check to see if there is a short circuit or a disconnection. Then install a new fuse, of the correct amperage rating. There are many fuses, each protecting a small group of components. So, that one blown fuse, does not shut down the whole system.
Choose Your Car Electrical System Help Topic Below
Thank You !