2 sist conected- variable A value -WHY?

[colin]

hy, i just connected 2 solar panels ( 2x65W / 3.6A/12v ac) and the problem is that when i connect them in paralel i have variable value for the A(Amps), from 0.4 -2 -4 A.
do I have to put something beetwen the? the solar charge is 20A sow it,s not a problem from him. please tel me if somebody knows.
regards calin

[Sunking]

No you have a wiring problem. My wild a$$ guess is you have +/- reversed somewhere. You should be seeing around 17 volts around 7 amps around noon on a bright sunny day. If not you gotta problem. Go find it.

[colin]

i do have 17- 18v but when the 2 panels are put in paralel together the amps are droping , ex:
at 12Am I have 2A-one 1 panel( the 2 panel - 2A) but when I pun + with + , - With - , I have for 15sec. 4A, after that its 2.2A, after another 10 sec. its 0.8 And after that its again 4A.
this is the cicle that it's hapening. I did thinck i need a diode beetween the.
is that the proble?

[colin]

The wires are ok, even in the solar panels its ok the conection because separatly they work.

[colin]

i try again totady and only when it's full sun it's happening, it's drooping the amps value.
I looked at the panel and one of the 6x6 cell its crack in the midle(1cm ). Could this be the problem?
regards to everybody

[Mike90250]

I looked at the panel and one of the 6x6 cell its crack in the midle(1cm ).

Any cracks are bad. It's likely to take your panel to half power. Are these store bought, flea-bay, or homemade panels ?

Adding a diode, or a dozen, will not help this problem.

[colin]

hy, they are homemade panels , i change the one that was crack and the same is hapening. If I connect only one at a time everithing it's ok , don't have that lost of Amps, but when they are in paralel and the sun is strong(12-2 PM , i have the lost of Amps . I looked at the wire and everithink it's ok. i realy don't know were i made the mistacke.
if enybody have something please tell me.
Regards calin-tnx

[MarineLiner]

..,, i change the one that was crack and the same is hapening.
If I connect only one at a time everithing it's ok , don't have that lost of Amps,
but when they are in paralel and the sun is strong(12-2 PM , i have the lost of Amps .
I looked at the wire and everithink it's ok.

[colin]

hy again and thx for the reply but the same, i don't undestend , the same problem, separately the 2 panels works fain, but when I put them in paralel and the sun is powerful the Amps value is variets. chen i look for some other mistakes that problely i made them and i don't know?

[MarineLiner]

TODAY:[QUOTE=MarineLiner;9172]

[colin]

k, I will test them today. hops going to work.

[colin]

hy , i test them. In the morning they work normaly but when the sun came on them at 13.30 when the sun was strong they started to droop the A value again. I don't know whats the problem, separatley tey work fain. I will try to make another one and see then.
Tnx for your help, but i will check the connections again and see if somewere it's not a perfect contact.
regards calin

[MarineLiner]

In the morning they work normaly but
when the sun came on them at 13.30 when the sun was strong they started to droop the A value again.
I don't know whats the problem, separatley tey work fain.
I will try to make another one and see then.

[colin]

housr: 10-13.30 Aprox: 4-5A
13.30- 18 Aprox: 6-7 A but the value is chaiging , ex: 7-6-3,5-0,9-2-5-0,9-4-6,5 ......only when yhe sun is on top of them.
The voltage is the same, it's not chaiging 19-21V all time( when thei are separately 18-19 and in paralel 19-21V).
I try it in the last 2 days and nothing is chainge. the ultimate solution is to make another one and see if it's the same proble.
If the cells are not grey on the back on all surface that it's meen something? i have 2 cells that are not all grey on the back and i am afraid that those are the problem.
calin

[MarineLiner]

housr:
10-13.30 Aprox: 4-5A
13.30-18 Aprox: 6-7A
but the value is chaiging , ex:
7-6-3,
5-0,
9-2-5-0,
9-4-6,
5 ......only when yhe sun is on top of them.
The voltage is the same, it's not chaiging 19-21V all time( when thei are separately 18-19 and in paralel 19-21V).
I try it in the last 2 days and nothing is chainge.