Okay, let’s tackle this. So David Williamson has 48 years of experience as an electrician, which is extremely rare. The industry average for electricians with this level of experience is around $75-$100 per hour. However, considering his longevity in the field, I think he might be able to command a higher rate. Let’s check for any industry benchmarks. According to the Electrical Contractors' Association, experienced electricians can earn up to $100 per hour. So, I’ll estimate around $75, keeping in mind that this is a very conservative estimate.