what size wire for 200 amp service

[SiennaMarie]

For a 200-amp service, you typically need 2/0 AWG copper or 4/0 AWG aluminum wire. However, to reduce voltage drop over long runs or to allow for future expansion, a slightly larger size is often recommended. Many professionals opt for 3/0 AWG copper or 250 kcmil aluminum wire as a safer, more reliable choice for 200-amp service installations.