What equipment is needed to collect nightcrawlers with electric?
a regular car battery, a couple of strands of insulated wire, and two metal, small diameter stakes or large nails. use one wire and nail to each battery post, stick the nails in the ground a few feet apart and touch the wires to the posts. p.s. if the dirt is dry on the surface the worms will be too deep. wet the ground a couple days in advance, but do not saturate the dirt. night crawlers like damp soil, not mud. (alternate plan; safer, less tools required.- take a very large wood rasp (or file) the bigger the better, stick one end in the ground about two or three inches and hold the other end firmly in one hand. with your other hand, take a metal rod or (i prefer) a lug wrench (a single, not a 4-way) and rub it up and down the rasp very quickly with moderate pressure. i swear this works. maybe its the vibration. not sure. old timers back home taught me this when i was a kid. the old timers said the worms thought it was thunder before a big rain and wanted to get on the surface before they drowned!!! but it works, that's a promise. but, same as before..... if the ground is very dry, it won't work. the dryer the ground is, the deeper down the crawlers go. then nothing but a shovel will get them out. good luck.
AC generators (properly called "alternators") must be EXACTLY synchronized when connected together (either in parallel or series) or one will act as a motor and drain power from the other instead of adding. This can also damage the equipment. Most alternators sold to the public lack the special equipment needed to synchronize as it usually isn't needed for the "stand alone" electric sources these are commonly used for.
The equipment needed to work in the food industry is entirely dependent upon how many people you are trying to serve and what type of food. It can range from commercial/industrial sized equipment to more moderate yet still large equipment. The type of equipment is often specialized by the type of food.
The large equipment needed to cook soup depends on the amount of soup you are going to cook. If you are only cooking a small amount of soup, it can be done in a crock pot or a microwave or in a pan on a range (stove) top. If you are cooking a large amount of soup, you will need a range (stove) and a large pan or a large electric roaster.