THE TITLE SHOULD READ PIN 85/86 NOT 30.

I'm looking for some info concerning amperage to trigger a Bosch relay. I didn't find anything via google. I would like to use some nice 12 conductor wire I've got to trigger relays, but each wire is only 22 gauge. It's my understanding that Bosch Relays use less that 1 amp to activate at 12v so I *assume* my 22 gauge wire would be fine. Thoughts?

 

Bosch is a company that makes a lot of different relays. Suggest you check their website for a spec sheet on the one you plan to use.

As for current handling of your 22 ga wire: This website should prove useful. You should read the notes about chassis wiring current handling capacity, and consider those against your particular application, and derate (add a safety factor) appropriately.

http://www.powerstream.com/Wire_Size.htm

 

You say trigger pin 30. I am a little confused by what you mean. Pin 30 is a feed for the accessory, part of the load circuit, not the trigger circuit.

 

Then I'm mistaken, I'm talking specifically about triggering the a standard 12v Bosch 40 amp relay or the ISO 280 Micro Relays. It looks like I'm looking at pins 85/86, that's what I get for going off memory. I assume the 22ga wire is fine for this as the magnetic coil itself appears to be made from 26ga wire. I'm an electrical noob, so I'm researching and learning as much as I can. I'd really like to make my own sPOD style box using the Bussman 15400 relay box as seen here. Slightly more affordable and flexible than an sPOD, but most importantly I can LEARN from the experience!

 

My relays only draw 15mA. 22 AWG is more than enough for that.

 

I've used as small as 24 gauge on short runs for the control circuit with no issues.