Yes, we talked about this in the forum sometime in the past, but I don't recall any firm source for this event. In any case that seems to be quite plausible as I recall seeing in everyday use electrical wiring even for 220V insulated in cotton braid, quite chewable.
By the way, a good site in Stalingrad, also presente here in the past.
http://users.pandora.be/stalingrad/
And the PzDiv I meant above was 22nd PD, making up 48th PzKorps with
THE Romanian Tank Div.