You are reading a single comment by @grams and its replies.
Click here to read the full conversation.
-
It's likely just poorly made spade connectors that didn't grip properly. Once they're fixed the problem is gone. Self-evidently the others are fine, since they'd be subjected to the same current and conditions.
@Tomo187 No idea about costs, this is the DIY thread! I suspect it could vary widely based on the particular flavour of handyperson.
grams
There’s obviously something wrong that it’s done this on multiple places, I’d be tempted to just change it instead of risking potentially setting my house on fire.