Relay wiring question
10-15-2000, 01:24 PM
#1
Donating Maxima.org Member
Thread Starter
Join Date: Sep 2000
Posts: 4,604
OK guys.... testing your expertise here.
I need to power an inverter. The inverter needs to be wired to/from the battery if it's going to run more than 100 watts or so and it probably is. So, I'm wiring it from the battery. However, I need it to switch off when the ignition switches off.
How to make this happen? Some kind of relay? Please tell me how to do this.
thanks,
/aac
I need to power an inverter. The inverter needs to be wired to/from the battery if it's going to run more than 100 watts or so and it probably is. So, I'm wiring it from the battery. However, I need it to switch off when the ignition switches off.
How to make this happen? Some kind of relay? Please tell me how to do this.
thanks,
/aac
10-15-2000, 06:27 PM
#2
Ok anthony, here's how you do it.
First, get a relay from radioshack or something. The relay has 4 slots on it, each is numbered. I can't remember the numbers but it's something like, 30, 35, 85, and 86.
Look at the pic on the relay for the way the numbers line up but let's assume it's like this:
30
___|___
| |
85-| |-86
|_______|
|
35
The 35 isn't right but I forget what number it is lol.
Anyway, they'll line up something like this. Now what you want to do is wire:
85 to the + of the battery
86 to the positive lead on the inverter.
You can see they are directly across from each other so when the relay is switched on it completes the circuit.
30 goes to the ignition wire (i use the cig lighter wire since that gets power when the key is turned on)
35 is a ground
That's all. If I didn't explain it good then just say so and I'll try again heh.
Chris
Numer
First, get a relay from radioshack or something. The relay has 4 slots on it, each is numbered. I can't remember the numbers but it's something like, 30, 35, 85, and 86.
Look at the pic on the relay for the way the numbers line up but let's assume it's like this:
30
___|___
| |
85-| |-86
|_______|
|
35
The 35 isn't right but I forget what number it is lol.
Anyway, they'll line up something like this. Now what you want to do is wire:
85 to the + of the battery
86 to the positive lead on the inverter.
You can see they are directly across from each other so when the relay is switched on it completes the circuit.
30 goes to the ignition wire (i use the cig lighter wire since that gets power when the key is turned on)
35 is a ground
That's all. If I didn't explain it good then just say so and I'll try again heh.
Chris
Numer
10-15-2000, 07:53 PM
#3
Donating Maxima.org Member
Thread Starter
Join Date: Sep 2000
Posts: 4,604
Originally posted by CKNY
Ok anthony, here's how you do it.
First, get a relay from radioshack or something. The relay has 4 slots on it, each is numbered. I can't remember the numbers but it's something like, 30, 35, 85, and 86.
Look at the pic on the relay for the way the numbers line up but let's assume it's like this:
30
___|___
| |
85-| |-86
|_______|
|
35
The 35 isn't right but I forget what number it is lol.
Anyway, they'll line up something like this. Now what you want to do is wire:
85 to the + of the battery
86 to the positive lead on the inverter.
You can see they are directly across from each other so when the relay is switched on it completes the circuit.
30 goes to the ignition wire (i use the cig lighter wire since that gets power when the key is turned on)
35 is a ground
That's all. If I didn't explain it good then just say so and I'll try again heh.
Chris
Numer
Ok anthony, here's how you do it.
First, get a relay from radioshack or something. The relay has 4 slots on it, each is numbered. I can't remember the numbers but it's something like, 30, 35, 85, and 86.
Look at the pic on the relay for the way the numbers line up but let's assume it's like this:
30
___|___
| |
85-| |-86
|_______|
|
35
The 35 isn't right but I forget what number it is lol.
Anyway, they'll line up something like this. Now what you want to do is wire:
85 to the + of the battery
86 to the positive lead on the inverter.
You can see they are directly across from each other so when the relay is switched on it completes the circuit.
30 goes to the ignition wire (i use the cig lighter wire since that gets power when the key is turned on)
35 is a ground
That's all. If I didn't explain it good then just say so and I'll try again heh.
Chris
Numer
Very helpful, thanks!!! I'll head to Radio Shack and see what they have...
thanks again,
/aac
10-17-2000, 02:23 PM
#5
Originally posted by acitrano
Very helpful, thanks!!! I'll head to Radio Shack and see what they have...
thanks again,
/aac
Very helpful, thanks!!! I'll head to Radio Shack and see what they have...
thanks again,
/aac
Depending on how big the interver is, you may bot be able to find a relay large enough to do what you need at the Shack. their "regular sized" relays will only go to 30-40amps. I don't think you'll need more than that, but if you do, just be sure you're aware of it first before trying to install something and it burning up. (not that you're dumb enough to do anything like the!
check the input power rating on the inverter and see how much current is required.
Also, be sure to use the correct size of wire going to and from the relay.
I've seen way too many cars catch fire and burn up because power wires were too small.
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