Wire gauge size ??

I'm going to be installing an under seat battery, no alternator/generator in my PA-11, I'm planning on using 4 gauge wire from the battery to the master solenoid and 4 gauge from there to the stater solenoid and 4 gauge up to the starter itself. Does that sound correct?
What gauge wire should I use from the solenoids to the battery switch
What gauge wire should I use from the starter solenoid to the starter switch?
I'll be installing nav lights, just in case I get caught out after sunset, not planning on night flights, what wire size is recommended for those?
I'll also be running a portable or small comm radio.
What wire size should I run from the master solenoid to my small bus to power the above?
Thanks

Here's a reference that seems to cover your questions (just delete the parts you don't want or need):

http://www.bandc.aero/pdfs/001510VFRSingleALT.pdf

lot's gonna depend on what type of items you install, regular lights, or LEDs..

from starter switch to solenoid 16 is more than enough...

mike mcs repair said:

lot's gonna depend on what type of items you install, regular lights, or LEDs..

Click to expand...

Big time. You need to read the chart in AC43.13 for wire size. You trace out the length of the wire needed and the max current that the wire will carry and the chart will show what gauge wire to use.

When I install underseat batteries. I use 4 gauge cable from the battery all the way to the starter motor.

Web

That's what I needed, thanks.

wireweinie said:

Big time. You need to read the chart in AC43.13 for wire size. You trace out the length of the wire needed and the max current that the wire will carry and the chart will show what gauge wire to use.

When I install underseat batteries. I use 4 gauge cable from the battery all the way to the starter motor.

Web

Click to expand...