No ground to subpanel
#1
05-10-19, 07:45 PM
No ground to subpanel
Just found that a 50's era subpanel in my kitchen (120V 80A) has no ground from the service panel. (It's been used for a ceiling lighting circuit only.)
Replacing the 2-wire (no ground) cable is going to a a huge PIA. I know not to bond neutral and ground in a normal subpanel, but would that work in this situation? There's even an existing grounding bar used by all the 2-wire+ground cables.
Replacing the 2-wire (no ground) cable is going to a a huge PIA. I know not to bond neutral and ground in a normal subpanel, but would that work in this situation? There's even an existing grounding bar used by all the 2-wire+ground cables.
#2
05-10-19, 09:04 PM
Group Moderator
There is no way to make a two wire feed to a 120v sub panel work safely.
Right now..... that panel is using the neutral as a ground which is 100% wrong.
There is no way around running a new cable to that sub panel.
If you do..... run a four wire cable and upgrade the panel to a 120/240v sub panel.
Right now..... that panel is using the neutral as a ground which is 100% wrong.
There is no way around running a new cable to that sub panel.
If you do..... run a four wire cable and upgrade the panel to a 120/240v sub panel.
rgutter voted this post useful.
#3
05-11-19, 09:07 AM
Just found that a 50's era subpanel in my kitchen (120V 80A) has no ground from the service panel. (It's been used for a ceiling lighting circuit only.)
