Double Lugged Ground

[greyboy39]

Saw a double tapped ground lug today, ground feeder to 60 amp garage subpanel. Is this condition ever allowed. The house is owned by an electrician and this is the only reason Im questioning if there are allowances for this condition.

[Chad Fabry]

If that panel is the service equipment and the terminal is rated for two wires (it's probably not) then it's OK.

[greyboy39]

It  is the main panel. Is there anyway to tell if the terminal is rated for two wires? Ive read that snowman shaped terminals/lugs are designated for two wire installations.

[Jim Katen]

42 minutes ago, greyboy39 said:

It  is the main panel. Is there anyway to tell if the terminal is rated for two wires? Ive read that snowman shaped terminals/lugs are designated for two wire installations.

 

If it's listed for two wires, that information will be stamped on the lug or on the schematic. 

[adarty]

As Jim Katen mentioned, the lug will bear a stamp giving number of conductors and size of acceptable conductors. Aluminum SE and a copper conductor under the same screw at that lug? I thinks that is just asking for trouble...