QO load centers offer premium features by allowing QO breakers, ground arc fault interrupters arc fault interrupters and surge arresters to be installed inside QO load centers enable the use of a full complement of accessories. Systems can be single or three phase and have indoor and outdoor versions. Indoor enclosures are designed to rotate 180 degrees to accommodate top or bottom service entrance feed which saves expensive service cable. QO load centers feature plated copper bus, providing superior performance and durability. This three phase QO load center is rated at 225 A at 240 VAC. This interior provides 42 spaces. The lugs will accept 4 AWG to 250 kcmil copper or aluminum wire. The load center is 9.17 inches tall, 4.69 inches wide and 3.11 inches deep. The load center is CSA certified.