Much less than Engineers.

However, they may be not able to quantify the values involved but they surely know the practical applications.

Yes you are taught electromagnetism as part of trade school,

- and btw, not all electricians flunked high school- it’s a career choice not a last resort

Zilch. They may have studied it in theory… but they never absorbed any of it.

They know some basics.. but unless they were specialized in working with Generators, they really don’t know what flux or webers/gauss is.

Ask them basics of electricity like capacitance or LC or even RMS circuits… they will blow their own fuse.

They went to trade school as they pretty much flunked thru high school.

Yes… they can wire up their cables and usually have no idea besides the external power. I have to deal with them for installations and have to explain things to them . I like to teach them ‘why’ certain things are done so they don’t feel I am making them do unnecessary work and they know how to do the same thing in the future. Most of them really don’t care and they think I am talking Greek!

Example… Installing a computer and asking them to route network cables’ conduit far from the power cables due to EMI. They have no idea what I am talking about.

all of thm know what they are doing and the risk involved