Our house was built in 1964 and I wanted to replace some of the electrical outlets. However, there's something bothering me.
When I turn off the circuit for an outlet, my low range non-contact voltage tester picks something up on the metal outlet box. After some testing, there's a few outlets that have this issue. What's strange is that the beeping on the tester increases in frequency in some situations. For example:
- I plug in something in another outlet on another circuit.
- I turn on or off or dim lights on another circuit.
I don't have a proper tool to measure the voltage. I'm considering a multi-meter, but I am getting into uncomfortable territory.
An outlet tester indicated that all outlets are wired correctly, except for two that had an open ground. I was able to correct one (the original copper wire broke) but the other one looked fine. I am not sure if this could be related. I will be hiring an electrician, but I'm looking to understand whether or not it is normal for the metal box to have some amount of voltage.
Additional Information: We did identify two receptacles that are "hot/neutral reversed". They were originally unnoticed because they were both upside-down. I am not sure if this could contribute to anything. We'll be hiring an electrician in a few weeks and I'll update the question once I have a response.