Is the electrical circuit can impact the mining profitability?

[Didz]

Hi Bitcointalk community,

It can sounds weird but since I asked my electrician to install a 240 Volt / 30 Amp circuit in my mining farm then I got the impression to have more shares on Hiveon pool mining ETH for one specific mining rig. Before I was using a 120 Volt / 20 Amp circuit on that mining rig.

Also, when I approach my ear from the PSUs plug on the 240 Volt / 30 Amp circuit there's a smooth electrical noise which I don't ear from the PSUs plugged on a 120 Volt / 20 Amp circuit.