You didn't say what type voltage system, grounded or ungrounded.
14 Amps may or may-not be a problem.
I would think if it is less than 1% to 3% of the systems unbalanced of the ungrounded conductors involved, it may not be a serious problem. Depends on the use of the system.
Had seen a system up-grade, for a dwelling, from a 2W 120V to 3W 120/240V system.
Had been alerted by a contractor, other than the contractor doing the service change, that he had been called for a service call at the site.
He told me that on the 2W 120v system that when the ungrounded conductor was carrying 27 amps, the grounded conductor was only carrying 9.5 amps.
When called to inspect the service change for release to the utility, I checked the 2W system and got the same type readings. The ungrounded conductor was carring about 65% more current than the grounded conductor and the GEC to the city water was carring the 65% current that the grounded conductor was not carrying.
Contacted the utility, the engineer asked me to OK the service and they would replace the triplex ( one conductor was not used since this was a 2W system) from their transformer pole to the dwelling.
After the utility changed their metering to the 3W system and a new triplex drop to the dwelling, The grounded conductor was still only carrying about 35% of the ungrounded conductors when turning "OFF" all CB's on one leg of the ungrounded system and the water GEC was carrying about 65%.
Apparently, the city water system had a better (lower resistance path) parallel path back to the utilities pole mounted transformer grounding system than the aluminum service drop triplex.
There were 6 other services attached to the transformer, so there were many other parallel paths of the grounded conductor(s).
I could not justify the Water GEC carrying about 65% of the grounded conductor return path. I would liked to check all of the services water GEC for amps vs the ungrounded conductors.
I wanted to follow-up more than I did, but the city just let the situation pass.
Glenn
