Average and Median Earnings. As of 2011, electricians earned an average of $52,910 per year, according to the Bureau of Labor Statistics. The average hourly pay for an electrician was estimated to be $25.44.The median annual income of electricians in the United States was $49,320, and the median-earning 50 percent of electricians made between $37,570 and $65,260 a year.s of 2011, the highest-paid electricians were those who taught at business schools. These workers earned an average of $79,250 a year. Most electricians worked as building equipment contractors, earning an average annual income of $52,600.
The contribution margin, sometimes used as a ratio, is the difference between a company's total sales revenue and variable costs. In other words, the contribution margin equals the amount that sales exceed variable costs. This is the sales amount that can be used to, or contributed to, pay off fixed costs.
Break-even Point Contribution Margin Approach. The contribution margin approach to calculate the break-even point (i.e. the point of zero profit or loss) is based on the CVP analysis concepts known as contribution margin and contribution margin ratio.hen calculated for a single unit, it is called unit contribution margin. Contribution margin ratio is the ratio of contribution margin to sales. In this method simple formulas are derived from the CVP analysis equation by rearranging the equation and then replacing certain parts with Contribution Margin formulas.