Jason Walls: 70% need no EV load calc

Jason Walls, an International Brotherhood of Electrical Workers master electrician, says most homeowners shopping for an electric-vehicle charger are being told to buy panel upgrades they do not need. (x.com) (youtube.com) Walls said roughly 70% of homes he sees can support a Level 2 charger without a service upgrade when the load is calculated under National Electrical Code section 220.82. He tied that claim to homes where contractors had quoted $3,000 to $5,000 for panel work. (x.com) (youtube.com) A load calculation is the math electricians use to estimate how much power a house is likely to draw at one time. National Electrical Code article 220 includes demand factors that reduce the total from a simple add-up-every-breaker approach. (nfpa.org) (expertce.com) Section 220.82 is the code’s optional method for single-family homes with services rated 100 amps or more. It applies broader demand factors, including 100% of the first 10 kilovolt-amperes and 40% of the remainder for general loads, before adding major appliances and heating or air-conditioning loads. (expertce.com) (nfpa.org) That matters in EV charging because a Level 2 charger is often the biggest new load a homeowner adds. A rough estimate can make a 100-amp or 200-amp service look full even when code demand factors leave enough headroom. (qmerit.com) (youtube.com) Walls built a tool called ChargeRight to turn that code math into a low-cost homeowner report. In his posts and videos, he says the service costs $12.99 and returns a PDF assessment instead of a truck-roll visit that can cost hundreds of dollars. (x.com) (youtube.com 1) (youtube.com 2) His argument is not that every house can skip a load calculation. It is that the calculation should come before a panel-upgrade quote, because the code method can show when existing capacity is enough and when a bigger service is actually required. (qmerit.com) (nfpa.org) Walls also frames the pitch as a consumer-protection issue inside a fast-growing home-electrification market. In one post, he said he built the tool after repeatedly seeing Tesla and Rivian buyers arrive with upgrade quotes that did not match the code calculation. (x.com) (duck9.com) The National Electrical Code remains the baseline rulebook for safe residential electrical design in all 50 states, though local jurisdictions decide which edition they enforce. That means any homeowner using a calculator still needs a licensed electrician and local permit path for the final installation. (nfpa.org) (wiresizes.com) Walls’ central claim is simple: run the code math first, then decide whether the panel really needs to grow. (x.com) (youtube.com)