Helpful Charts

At Chapman Electric Supply, we’re committed to helping you get your job done right. Below you will find various charts to aid you in calculating your needs and choosing the correct product.  These are great for both professional and hobby electricians.  We provide you with additional information in our glossary and series of helpful articles.     

If you still have questions, contact us today!  We’re ready to help you tackle any problem.  We have the know-how and many years of quality service and supply behind us. 

Helpful charts from Chapman Electric:

• AC/DC Formulas
• AC Efficiency
• Ohm’s Law – Power Formulas
• Voltage Drop Formulas
• Wire Jackets