Surge protectors are usually rated in joules, which are a way to measure energy, and in essence, the more joules the better. For computer systems, 1,000 joules or more is recommended. This joule rating gives you a sense of how long the device can protect against surges and spikes.
Most commercial motor vehicles in Wisconsin require a USDOT Number and it must be provided at the time of registration. If you are required to have a USDOT Number, and cannot produce the number for verification, your vehicle registration application will not be processed until a valid number is provided.
Information on Required Decals for Trucks. USDOT Decal Requirements. USDOT (United States Department of Transportation) requires a US DOT Number be applied to each side of all Commercial Vehicles (Any trucks exceeding 10,001 pounds) that is readable from 50 feet (2 tall in a contrasting color) and in a readable copy or font.