Cow
Senior Member
- Location
- Eastern Oregon
- Occupation
- Electrician
I've got a service to repair on Tue for a farm. There are two meterbases mounted on a stanchion feeding a pump and irrigation pivot along with some other things. Both meterbases H-tapped to the same quadplex, but only the phases are connected? There is no 4th wire in the mast, and the messenger wire is disconnected at the pots and the masts. The service is 480/277 wye as far as I can tell. Had weird voltage readings:
A-gr 260v
B-gr 270v
C-gr 300v
But 480v between any two. From my limited investigating there doesn't appear to be any neutral load, seems to be strictly straight 3 phase equipment.
I was planning on shoving a neutral up the mast and having the POCO reconnect the messenger on both ends. I have a feeling it'd clear up my weird phase to ground voltages once I get a good ground reference. Anybody know why a service would be wired this way?
A-gr 260v
B-gr 270v
C-gr 300v
But 480v between any two. From my limited investigating there doesn't appear to be any neutral load, seems to be strictly straight 3 phase equipment.
I was planning on shoving a neutral up the mast and having the POCO reconnect the messenger on both ends. I have a feeling it'd clear up my weird phase to ground voltages once I get a good ground reference. Anybody know why a service would be wired this way?