4/0 ser

[eds]

Why does the typical 4/0 ser cable consist of 4/0 phase conductors, 4/0 neutral and a 2/0 equipment ground. This is usually used on the load side of a 200 amp breaker, so why the larger equipment ground

 

[JFletcher]

Why does the typical 4/0 ser cable consist of 4/0 phase conductors, 4/0 neutral and a 2/0 equipment ground. This is usually used on the load side of a 200 amp breaker, so why the larger equipment ground

2/0 is smaller than 4/0

 

[eds]

Doesn't the equipment ground only need to be #4 when protected by a 200 amp breaker

 

[Joe Villani]

Doesn't the equipment ground only need to be #4 when protected by a 200 amp breaker

Its for paralleling purposes.

 

[electrofelon]

Its for paralleling purposes.

....and allows you to use a bigger size phase conductor than minimum (i.e for voltage drop)

 

[eds]

Cable is being used from a 200 amp disconnect to a 200 amp load center. Quick check today doesn't list a 4/0 4/0 4/0 4 ser. Just curious as to why not.

 

[electrofelon]

Cable is being used from a 200 amp disconnect to a 200 amp load center. Quick check today doesn't list a 4/0 4/0 4/0 4 ser. Just curious as to why not.

The larger EGC allows the cable to be used for a wider range of applications. Sit back relax and enjoy your larger than necessary EGC (and your full sized neutral)