junction box

newone972

New member

Joined

Nov 26, 2018

Messages

18

• Feb 25, 2020

• #1

there is my PV jucntion box4 IN + 1 out

for

8 Panels (2 in // and 4 in sries). PV = 12

4 breakers 10 A+ 2 poles switch 63A

it will be upgraded later (fuse + lignhting protection)

It's not perfect for the moment :shy:

 

R

Redpacket

Active member

Joined

Feb 28, 2018

Messages

1,534

• Feb 25, 2020

• #2

Don't forget the "4 hole grommets" in the cable glands for outdoor use

 

ajw22

Member

Joined

Nov 16, 2018

Messages

733

• Feb 25, 2020

• #3

You're using breakers rated for AC220V only, not for DC. :exclamation: This is likely dangerous :exclamation: . DC will create an electric arc when disconnecting, and will melt/burn breakers not designed to extinguish this arc. I strongly recommend you change all breakers.
Note that DC breakers often have a +/- as well asIN(PV)/OUT(Charger) directions you have to follow.

 

TheBatteries

Administrator

Joined

Oct 8, 2016

Messages

2,127

• Feb 25, 2020

• #4

As stated above, those breakers are for AC not DC. You cannot use AC breakers on DC electricity. If one trips under load, fire will most likely result...

 

OffGridInTheCity

Moderator

Joined

Dec 15, 2018

Messages

2,714

• Feb 25, 2020

• #5

I use Midnite Solar breakers (specifically DC) like this one -https://www.ebay.com/itm/MIDNITE-SO...097381?hash=item3d4fb268e5:g:hU4AAOSw4nhZ77bK

They come in 5, 10, 15, .... amps. Not pushing this brand, just to share that DC breakers for solar are widely available on ebay, amazon etc.

 

daromer

Moderator

Joined

Oct 8, 2016

Messages

5,665

• Feb 25, 2020

• #6

Good work. Except for the ac breakers. You can get Schneider cheap on ebay made for DC