I am looking into installing an electric car charger. I called a few electricians to get a quote. My main panel is full, but there is an existing 50 amp breaker for an electric cooking range which is currently unused since I am using a gas cooking range. All of the electricians I am talking with agree that we can just reuse that breaker.
My town requires a permit and inspection for installing an EVSE. When I mentioned this to one of the electricians who visited to provide a quote, he told me that I would need to replace my existing panel because it has too many tandem breakers (8 currently). He told me that this would be flagged during the inspection and that he would give me a discount if I get it replaced together with the charger installation.
I want to make sure that I really do need to replace the panel and this is not some sort of up-sell. I did some research online and the general idea I get is that as long as the panel allows for tandem breakers in a slot, there should not be a problem with the number of them used. Can anybody here tell me if I really need to replace the panel?
I also see some listings for 20 spaces - 40 circuits panels online, which look like what I currently have (https://www.lowes.com/pd/Square-D-200-Amp-20-Spaces-40-Circuit-Convertible-Main-Breaker-Panel-Plug-On-Neutral-Load-Center-Value-Pack/50311179).
I am not able to take a clear picture of the label on the panel as there are some wires in the way and I am not comfortable moving them. I read about CTL (Circuit Total Limitation) somewhere. The panel mentions CTL, but not all the tandem breakers mention it.