Siemens EC2GB152 Ground Bar Kit. Siemens Ground Bar Kit, 15 Terminals, 14 to 4 AWG Conductor, For Use With: ES and PL Load Center. Additional Description: SIEM-EC2GB152 GROUND BAR KIT-15 POS,NO.14-4 W/ 2/0 LUG LUG. Catalog Description: Siemens Low Voltage Residential Specialty Load Centers Ground Bar Kits for ES and PL load centers. 15 positions with 2/0 lug..