How many grounds question

[m32825]

If I'm running two circuits down one piece of conduit, does each one need its own ground wire? Using 12 gauge copper for all wires, each circuit is 20 amps.

-- Carl

 

[mark flucke]

one ground sized for the largest circuit-hence you would have :1 green or bare Copper #12, 2 white #12 and 2 Non-*********** conductors #12 traditionally black or red

 

[m32825]

one ground sized for the largest circuit-hence you would have :1 green or bare Copper #12, 2 white #12 and 2 Non-*********** conductors #12 traditionally black or red

Woohoo, one less wire in my 1/2" EMT! Thanks Mark!

 

[alfredeneuman]

Properly installed EMT doesn't need a ground wire.
If one is installed anyway, the EMT takes the large majority of the fault current. (like 75%)

 

[Slowgsr]

Properly installed EMT doesn't need a ground wire.
If one is installed anyway, the EMT takes the large majority of the fault current. (like 75%)

I never pull bonds. Just keep them locknuts tight (and set screws)