a) Junction box type and identification are correct,no damage;
b) silicone Around the base of the junction box need to completely overflow,overflow width ≥ 2mm; silicone coating should be smooth and uniform;
silicone need to bond backsheet and the base of the junction box firmly,without warping phenomenon;
c)seal the leads with silicone,leads need to be smooth, not bent;
diode direction and polarity is correct;
d) junction box lid should be covered correctly. e) The installation location of the junction box in accordance with the design requirements,position offset ≤ 1cm,Distance difference between Jbox and frame≤ 3 mm