Number of silver bands in the cell Busbars

1. Number of silver bands in the cell Busbars
   The Bus Bar is the vertical metal lines found in the solar cells. They are silver wires that allow for the flow of electricity , and are connected to each other respectively to be the voltage of one cell in the solar panel 0.5 volts. 
   The cost of these rails is high and represents a large percentage of the total cost of the cell. The 
   importance of these bars: 
   1 - give the durability of the cell up to 25 years old, which must withstand the difficult weather conditions of wind and temperature varying 
   2 - reduce the loss of productivity in the event of occurrence Cell cracks due to weather conditions 

1. Two plates with 3Busbar and 5BusBar cells
   The old and cheap models of cells have three connecting rods just as in the panel on the left. - 3BB 
   New and commercially deployed models have 4 rods - 4BB 
   There is also advanced cell technology with 5 bars as in the panel on the right of the picture - 5BB 
   When buying a good board make sure that the cells are 4BB and not 3BB

• https://balharbourfl.gov/government/departments/parks-and-public-spaces/2017/11/18/events/movie-on-the-beach
• https://www.socketmobile.com/de/about-us/news-room/featured-article/featured-article/2017/05/02/product-update-socket-mobile-duracase-protective-casing-for-samsung-j3-and-j5
• https://www.socketmobile.com/de/about-us/news-room/featured-article/featured-article/2017/05/02/product-update-socket-mobile-duracase-protective-casing-for-samsung-j3-and-j5
• https://www.fsb.org.uk/about-us/company-information/annual-reports-agm-information/fsb-annual-report-accounts-2015-2016
• https://www.htcc.org/home/2016/01/08/guide-to-entering-continuing-education