so I checked the main disco and there is slight corrosion on the lug for one phase, not the neutral as i thought might be the case, and each apt calc.s at 35 amps 240v. the complaining unit is still on a 40amp breaker. there is a sump pump on the new house panel and there are number 2/0 wire feeding two stacks of 3 and four meters from a hot gutter split bolted to 4/0 copper. my question is would I connect the recoding meter to the effected unit feeders or the main service wires.? this is the first time i've done a multi unit upgrade. thanks chris