nlspace
Posts: 368
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: Breaker thrown. I wonder what root source of problem was?

Sat May 08, 2021 9:03 am

Give a tug on the black wire--i'll bet it will pull right out without loosing the screw. That is the root source of your problem.

goldbrick
Posts: 1259
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Breaker thrown. I wonder what root source of problem was?

Sat May 08, 2021 6:31 pm

+1 on the Robertson square drive vs a flat blade, you'll be amazed at the difference. If you do it yourself, the wire should be able to go completely through (under) the set screw. You should be able to see the wire peeking out on the far side of the screw. Hold it there while you tighten the screw.

It never hurts to check on the tightness of the connections from time to time but I've read that the newer Al alloys don't have the expansion issues that older Al wiring had so once it's tight, it will probably stay tight. Anti-ox paste is nice but not required. It's also only about $2.

Good luck and be careful.

LeftieBiker
Moderator
Posts: 16941
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Breaker thrown. I wonder what root source of problem was?

Sat May 08, 2021 6:49 pm

If you do have to use a flat blade, make sure that it's large enough for the screw. Most slips & head strips happen because the blade is moving around in the head.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

EatsShootsandLeafs
Posts: 710
Joined: Fri Aug 24, 2012 10:59 am
Delivery Date: 24 Aug 2012

Re: Breaker thrown. I wonder what root source of problem was?

Mon May 10, 2021 6:40 am

Update, because I wanted to test a bit more first.

The black wire had not unseated itself, but when I removed it I saw this. A couple of the strands had fallen out/been ruined when the electrician installed it.

Anyway, I snipped off the last 1/4", reattached the wire, and was able to fill 2/3 of the battery on the Leaf yesterday at full amps with the black wire only feeling mildly warm instead of very hot (and it was very hot when I set charger down to 16A, previously). Breaker didn't throw. I will update this thread if this issue recurs but it looks resolved now. Thanks for all the posts!
How many times have you reset the tripped breaker and continued to use it? If a couple times, the breaker is likely OK to continue using, but if, say, 10 times, it should be replaced by a qualified person.
I think it threw 3 times, maybe 4. I know it's bad to have them trip too much so I didn't beat on it.

Image
Last edited by EatsShootsandLeafs on Mon May 10, 2021 9:14 am, edited 1 time in total.

nlspace
Posts: 368
Joined: Mon Jun 05, 2017 10:21 pm
Delivery Date: 06 Jun 2017

Re: Breaker thrown. I wonder what root source of problem was?

Mon May 10, 2021 8:35 am

Looks like a good application for a crimp ferrule

Image

User avatar
Marktm
Gold Member
Posts: 659
Joined: Thu Jan 21, 2016 10:49 am
Delivery Date: 09 Jan 2016
Leaf Number: 022737
Location: Houston, TX

Re: Breaker thrown. I wonder what root source of problem was?

Mon May 10, 2021 8:41 am

Similarly, I replaced the burned out spade connector inside my OpenEVSE with a soldered 8 awg spade connector, all is working great at 24 amps (max for my 30 amps breaker).
2012 Leaf SL
2021 Leaf SV Plus

goldbrick
Posts: 1259
Joined: Tue Aug 01, 2017 3:33 pm
Delivery Date: 01 Aug 2017
Leaf Number: 311806
Location: Boulder, CO

Re: Breaker thrown. I wonder what root source of problem was?

Mon May 10, 2021 9:19 am

Glad you caught that and got it fixed. Thanks for the update too, it's nice when there is a logical and conclusive end to this type of problem.

User avatar
Nubo
Posts: 5974
Joined: Fri May 28, 2010 11:01 am
Delivery Date: 31 Oct 2014
Location: Vallejo, CA

Re: Breaker thrown. I wonder what root source of problem was?

Mon May 10, 2021 10:46 am

goldbrick wrote:
Mon May 10, 2021 9:19 am
Glad you caught that and got it fixed. Thanks for the update too, it's nice when there is a logical and conclusive end to this type of problem.
Yep. Googling for answers to technical problems can be challenging sometimes. Image
I noticed you're still working with polymers.

EatsShootsandLeafs
Posts: 710
Joined: Fri Aug 24, 2012 10:59 am
Delivery Date: 24 Aug 2012

Re: Breaker thrown. I wonder what root source of problem was?

Mon May 10, 2021 11:26 am

Nubo wrote:
Mon May 10, 2021 10:46 am
goldbrick wrote:
Mon May 10, 2021 9:19 am
Glad you caught that and got it fixed. Thanks for the update too, it's nice when there is a logical and conclusive end to this type of problem.
Yep. Googling for answers to technical problems can be challenging sometimes. Image
So true. I've had this happen more than one when I'm googling a weird error in some code. Invariably the question was from a decade ago and it has answers...but they are wrong.

SageBrush
Forum Supporter
Posts: 6265
Joined: Sun Mar 06, 2011 2:28 am
Delivery Date: 13 Feb 2017
Location: NM

Re: Breaker thrown. I wonder what root source of problem was?

Mon May 10, 2021 12:20 pm

Off topic since OP's problem is resolved ...

I pretty much know that technical responses in this forum from Whitney or Gerry are the the most valuable, followed by a select few others. Newbs are inundated with noise (or worse) and often flounder since they lack filters. This problem has plagued the internet forever. I still think that karma points are the best solution found so far, even though they sometimes are abused or manipulated.
2013 LEAF 'S' Model with QC & rear-view camera
Bought Jan 2017 from N. California
Two years in Colorado, now in NM
03/18: 58 Ahr, 28k miles
11/18: 56.16 Ahr, 30k miles
09/20: 54.3 Ahr; 38k miles
-----
2018 Tesla Model 3 LR, Delivered 6/2018

Return to “EVSE / Charging Equipment and Networks”