GE PowerMark Plus™ Main Breaker Load Center, 3-Phase Standard, 208Y/120 VAC, 100 A, 22 kA Interrupt, 18 Circuits, THQL Breaker, Plug-In Breaker Mounting, 4-Wire Wiring Configuration, 26 Spaces, 6 to 1/0 AWG, 4 to 1/0 AWG Wire, Flush Mount, NEMA 1, NEMA 6 Enclosure Box, 23 in H x 14 in W x 3-3/4 in D Suitable for use as service entrance equipment when installed in accordance with the national electrical code (18) 1 in, (8) 1/2 in space 60/75 deg C conductor rating Top/bottom feed 6 - 1/0 AWG copper, 4 - 1/0 AWG aluminum Combination indoor type 1 enclosure Main lug models field convertible to main breaker Split neutrals extend the full length of the interior for ease of wiring Straight through main wiring Compact box maintains optimum wire-bending space Front packed in inner carton for added protection SPECIFICATIONS Type : Three Phase Standard Voltage Rating : 208 Y/120 VAC Amperage Rating : 100 A Number of Poles : 1 Interrupt Rating : 22 kA Number Of Circuits : 18 Breaker Type : THQL Breaker Mounting : Plug-In Wiring Configuration : 4-Wire Number Of Spaces : 26 Wire Size : 6 to 1/0 AWG/4 to 1/0 AWG Mounting Type : Flush Enclosure Type : NEMA 1 Enclosure Box Size : 6 Dimensions : 23 in H x 14 in W x 3-3/4 in D