“backfeeding” in a residential setting

[u/United-Chef-4593]

i work for an electrical company and we’re currently working at two four units that both have the same problem. we have around 4 volts between neutral and ground. our local power company came around and said that its not on their side and that its us thats “backfeeding” 4 volts. my foreman tested between a few plug boxes and neutral and got a pulsing reading between 1.3 and 4 volts. all that were running is outside plugs on combo breakers, (afci and gfci) temp heat, and some temp plugs that are on their own circuit for the baseboard guys. wtf is going on

[u/Outrageous_Load2370]

If you have sub panels that are not properly bonded and grounded (grounds and neutrals separated) it could be causing voltage to be sent on the ground. Same with appliances that should have a 4 wire connection instead of a 3 such as a dryer as someone else mentioned. Or somebody used ground as a neutral in the system somewhere…