Wiring A 30amp RV Outlet - Ground & Neutral
I wired up a 30amp plug in my barn this weekend to power the travel trailer when it’s in the driveway. My barn is wired with a 100amp service breaker cabinet off the house main service, which was ins...
Forum Discussion
time2roll wrote:
So 3 wire 240v split phase.... not 4 wire. Dang I would be hoping the conduit is large enough to pull a ground wire. Good luck.
There ARE four wires. Red (110V), Black (110V), White (neutral), and ground. My point is there is no ground wire from the barn sub panel to the earth... only the wire between the main house panel (neutral buss) and the barn sub panel neutral bus. Looks like what needs to happen is:
1) Removal of the bonding screw in the sub panel
2) Installation of a ground terminal strip In sub panel - bond to sub panel metal case
3) Installation of a ground rod at the sub panel
4) Installation of ground cable from ground strip in sub panel to ground rod
5) Reterminate any grounds (like this 30A RV outlet) on the ground terminal strip.
All neutrals in sub panel then will go back to the house main panel, but barn circuit grounds will be separated and go to earth outside the barn (to earth).
