8 months ago
Last edited at 9:18PM on 4/3/2013
The national electrical code calls for a minimum of #4 solid bare copper for a 125 amp. service disconnect. The 1/0 SEU is SERVICE ENTRANCE UNDER GROUND (insulated, not bare).the 1/0 is stranded and is 4 times larger than #4 solid bare but will not fit into the ground lug in the main disconnect without modification. I would call the local permitting/ inspecting office and ask their opinion as to whether they will accept the modification to the larger ground bond or demand #4 solid.