โApr-28-2014 05:09 PM
โApr-30-2014 08:27 AM
โApr-30-2014 07:42 AM
jmccen58 wrote:mena661 wrote:
MC4 is typically #10. #4 is WAY overkill for 100W and still overkill even if you maxed out the controller at 30 amps output. It's only 3 feet, #8 is under 1% voltage drop for that distance and can handle almost 70 amps. No need for #4. If you're keeping this at 100W or 200W you don't even need #8.
Could I use MC4 to go from controller to battery then? (without to much of a drop in efficiency)
โApr-29-2014 07:35 AM
westend wrote:
I used something similar to these to terminate #4 onto the controller lugs. IIRC, the controller lugs were #8 maximum wire size.
โApr-29-2014 07:21 AM
mena661 wrote:
MC4 is typically #10. #4 is WAY overkill for 100W and still overkill even if you maxed out the controller at 30 amps output. It's only 3 feet, #8 is under 1% voltage drop for that distance and can handle almost 70 amps. No need for #4. If you're keeping this at 100W or 200W you don't even need #8.
โApr-29-2014 07:07 AM
โApr-29-2014 06:33 AM
Almot wrote:
1) What controller?
2) What is expected output current?
3) Is it 3ft total Pos and Neg or just a distance to battery?
4) Are you asking about wire gauge or exactly about "connectors"? (most controllers accept bare wire end, no connectors required)
PS: Some controllers indeed have inadequately small output terminals, like #8, with 30A output. Midnite "Kid" is one of them, but I'm not sure if there are any others, among known brands. Most controllers have terminals sized adequately.
โApr-29-2014 01:42 AM
โApr-28-2014 08:13 PM
โApr-28-2014 07:13 PM
smkettner wrote:X2, for 3 feet you don't need monster wire unless you have multiple 100's of watts in parallel. If you already have the wire just trim some strands to make it fit. Nothing wrong with that.
For 3' do not try to cram larger wire than the connectors are designed for. Then crimp a closed end lug on the wire and seal with shrink tubing for a permanent connection. Usually it is a 5/16" hole you need in the lug for the battery stud.
โApr-28-2014 06:37 PM
โApr-28-2014 05:17 PM