There's also the matter of tires. Overloaded tires .... well, tap the sidewall, and you lose the tire. For those who don't know, here's a real basic primer:
1/2 ton ... like F-150 .... passenger truck tires OK
3/4 ton ... like F-250 .... ought to be 6 ply
1 ton ... like F-350 .... ought to be 10 ply.
If you get helper springs .... I've had those, and they did help ... but you ought to 'go up' with your tires as well.
My general observation is that an ("average") electrician's truck ought to be a 3/4 ton truck or van; no need for dual rear tires or 4 wheel drive. As large an engine as you can get is a plus.
