They are Power (P) or (W), measured in Watts, Voltage (V) or (E), measured in Volts, Current or Amperage (I), measured in Amps (Amperes), and Resistance (R) measured in Ohms. The needed factor will be calculated for you when you click on the Calculate button for that table.
Do You Need A PUC Number? What is a PUC Number and do I need one? A PUC Number is the number provided by the Public Utility Commission of Pennsylvania for commercial carriers of property, excluding household goods, when providing transportation between points in PA. The simple answer is YES, unless you can guarantee you will only carry property over state lines.
If a vehicle has a USDOT number, and operates in California, there is no requirement to also show CA number lettering. HOWEVER, you must be prepared to show your CA number papers at the truck stops if asked. Therefore, it is easier on your drivers if they already have the CA number on the doors. Depending on how your truck is used, you may also need MCC (Motor Carrier) numbers and GVW (Gross Vehicle Weight) numbers on your cab doors.