Page 22 - excerpts ELP

SELf-CONTAINED METERS | CHAPter One
2. With the customer’s disconnect open, a voltage reading of zero between L1 and L2 and the neutral will con rm that the service is not back fed from another source.
S1
Source S2 (Line)
zero reading
0 A
V
OFF V
Customer Disconnect Open
Testing for back feed
L1
L2
Load
nOrtHWeSt LineMAn COLLege 19