Useful Circuit Current Drain Tester

[jeff1954]

Thanks Mike for your prompt reply.
If for instance I put the highest rate fuse that is used in the car ie 30 Amp into the tester, would it damage the circuit of a lower rated fuse.

Jeff

[J44EAG]

No. It would not.

Remember a fuse is there to protect the load/unit in the event of a fault. A few seconds with the tester will do no damage.

However, if for instance the load were a motor with a significant fault, it might take a few more milliseconds to blow a high rated fuse than the correct lower rated one. Not really a problem if the motor was a burned out heap already!

Just been showing the tester around on the pontoons here this morning. The guys thought it a great little tool.

Mike

[jeff1954]

OK that's put my mind at rest, as you can probably gather I'm not very clued up on the electrical side of things.
Thanks. Jeff

[J44EAG]

Think of electrics as plumbing. All a matter of force, pressure and area.

If you want more water out of the end of a pipe, you either increase the pressure of the water at source or increase the size of the pipe so it will pass more water with less pressure.

If you over do water pressure, the pipe will burst. The same with a cable if you try to draw too much current through too small a cable. So you increase cable size with a bigger load to reduce the pressure.

If in doubt, think like water!

Electrics don`t need to be a black art. The issue many people have is that they can`t see electrical energy and therefore have a problem when it comes to "visualising" what happens each time you hit the switch.

Eric the Electron rules ok.

Mike