Electrical Wiring / Load Question

[brekas]

Hi,

I've successfully hard wired my V1 to the power/telephone circuit using the becker wiring harness...I'm about to hardwire a garage remote tapping the free always on 12V and am consider hardwiring an ipod cradle while I have everything torn open...When/How do you know if you are putting to much of a load on a specific circuit...I'm guessing it's not an issue with the garage remote and even the ipod but am curious how to calculate tolerable loads when tapping various circuits.

thanks,

Bret

[Tool Pants]

The fuse for that circuit is 7.5 amps. I can't imagine that all of your 3 devices draw that much current even if all 3 are on at the same.

Electrical devices usually have a sticker to tell you the current draw. If it is beyond the rating of the fuse then the fuse blows.

[brekas]

The fuse for that circuit is 7.5 amps.  I can't imagine that all of your 3 devices draw that much current even if all 3 are on at the same.

Electrical devices usually have a sticker to tell you the current draw.  If it is beyond the rating of the fuse then the fuse blows.

<{POST_SNAPBACK}>

great thanks...so if you happen to overload a circuit patching additional items into it could you simply use a higher amped fuse?...obviously i would tap into other circuits before overloading a single one...thanks again...i'll have to go find a basic auto electrical book

[Tool Pants]

Why are you asking questions about a potential problem you do not have.

Want to hook up a microwave oven.

Toaster.

[0586slb]

...so if you happen to overload a circuit patching additional items into it could you simply use a higher amped fuse?...

<{POST_SNAPBACK}>

Yes, if you want the car to catch fire(!) :o

Fuses are rated to protect the cabling, as well as the end component. You'd be inviting disaster if you start uprating fuse values. But as Tool Pants said, you will be quite safe adding the equipment you have quoted.

[Tool Pants]

I was a history major so I can say this. Let's say your devices draw 9 amps and you are using the cell phone connector which has a 7.5 amp fuse and that fuse keeps blowing. Can you replace the 7.5 with a 10 amp fuse and not fry the wires. I think you can get away with it.

I put in air horns. The compressor requires a 20 amp fuse with a 30 amp relay on a dedicated circuit. I was to lazy to wire it up.

The oem electric horns have a 25 amp fuse with a 40 amp relay. For the air horns I tapped into the electric horn circuit. So all horns go through the 25 amp fuse and the 40 amp relay. The first time I hit the horn button I expected the fuse to blow or the relay to melt. Instead it has worked for 2 years. If the 25 amp fuse had blown I probably would have tried a 30 amp fuse.

There is also an unused fuse slot in the fuse box. Porsche says it is rated at a max of 5 amps. I would put a 7.5 amp fuse there.

So now the EE majors can flame away.

[brekas]

Why are you asking questions about a potential problem you do not have.

Want to hook up a microwave oven.

Toaster.

<{POST_SNAPBACK}>

;-) lol

no just trying to learn a little bit...i realize there's a limit always, cabling, fuses, relays etc...just trying to make sense of the limitations...for what i'm doing as you said i'm nowhere close to stressing the circuit...thanks for the help.