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Electricians are trained to work in the electrical trade. Linemen are trained to work on the primary high voltage side of the electrical trade.
the load
Electrical heating element, electrical blower - blows hot air.
Aluminum is highly conductive and creates an electrical pathway to ground.
By 'switching on an electrical appliance' we are completing (closing) the electrical circuit, allowing electricity to flow and the device to work.
How can you work unsupervised give examples?"
I don't believe so, if you are in America you must be 16 to work with around any "dangerous" machinery, such as a stove.
You can say you are disciplined and organized and you work well by yourself. You can give examples from jobs where you had to work independently.
It would depend a great deal on the legislation in your country. However positions would be very limited. There may be posts for a closely supervised assistant for certain activities though it is doubtful you would be allowed to work unsupervised.
Apprentices were slaves that worked on the plantations after the emancipation proclamation was issued. Apprentices still faced many difficulties however, since many owners did not follow the rules. They were still made to work long hours in dangerous work conditions. They also were charged large amounts for lodging, food, medicine and their freedom so they would have to work more for the owners.
An apprentice electrician should put "I am an apprentice electrician, which means I have not completed the minimum training required to be recognized as a qualified electrician. According to the National Electrical Code book, since I am not qualified I must not do electrical work unsupervised by a qualified electrician." on a business card for it to be legal.
Electricians are trained to work in the electrical trade. Linemen are trained to work on the primary high voltage side of the electrical trade.
at the age of 16 as long as they've finished secondary school and have the requirements needed
In Rembrandts studio there worked several assistants and apprentices.
Apprentices were often unhappy with the conditions of the apprenticeship system because they were required to work long hours for low pay, had little control over their working conditions, and had limited opportunities for advancement or career growth. Additionally, some apprentices were subjected to abuse, exploitation, and poor treatment by their masters.
Judaism doesn't restrict the use of anything electrical on Sundays for religious reasons as Sunday is just the first day of the week. In fact, in Israel, the work week starts on Sunday, not Monday.
I think the IBEW (international Brotherhood of Electrical Workers) requires 5 years apprenticeship under a journeyman electrician to be allowed to work without supervision. Schooling in electrical theory and electrical building codes is also required to complete the apprenticeship program.