I have a customer (Hair Salon) calling me and complaining about a high amount of static electricity in there space. They stated that their customers are complaining and the hair on their arms are sticking straight up, also the hair on the floor surface is sticking up even, etc. I am going to see for myself and run a sling to see what the RH is really doing.
This is a common supply plenum from Air Handlers that serve the whole building and I know there not any static problems in the rest of the building. This is Seattle which in general has high humidity unless it is freezing and clear. It is a fairly new space and the outside humidity is at 80 percent. Supply air temperature is 55 degrees typically here and is reheated with electric heat. It is a fairly new built out space.