Im trying to repair a washing machine and I need to extend some of the 20awg wire... but I cannot find any locally. The smallest I have is tinned #16. However, the butt splices take 22-18. Where can I get the proper 20awg (high temp wire I assume)? Is there a better way to connect the 20 with the larger 16?

I am considering installing a Sub Panel in my garage and I have a few questions. I would like to run the wire myself and have an electrician hook it up at both ends to save some money. I have 200 A service, but mostly gas appliances. The only major electrical appliance is a double 15 AC unit and a 30 A dryer. In the garage I may want to eventually get an electric car years down the road which is 30A, I am thinking of buying a popup camper which needs up to 30A, I will have tools in there, plus I may add a small heat pump to the garage at some point in the future. I was thinking 100A subpanel, but is that too big?