In the bathroom in my new house there is a blank wallplate. When I remove the wallplate, I see the wires in the following photo. When I asked the builder's electrician, he said that this was a Jacuzzi splice. Since I didn't get a jacuzzi/jetted tub, this is just extra wiring that has no purpose and was put in because wiring was done before I made selections.
I was hoping I could put in an extra outlet here, but was told I could do nothing with it. Is that accurate? If this is wired into a circuit/breaker it would be great to make use of electricity in this location.
Can you confirm whether or not I can use this extra wiring for any useful purpose, or indeed, as the electrician said - its only purpose would have been to control the water jets and it can't be used for anything else. Let me know if there is something I can easily check if it's not clear from just looking at the photo.