Shower extractor fan and light problem. I have wired it up like this (ignoring earths for simplicity). I'll start at the junction box. There are three terminals here: Live, Switched Live and Neutral.
Three wires are attached to the Live terminal: the first from the feed, the second to the light and fan switch (located outside the shower room) and the third to the fan isolator (and then on to the timer fan).
Three wires are also attached to the Switched Live terminal: the first comes from the light and fan switch, the second goes to the fan isolator (and then on to the fan) and the third goes to the shower light (via a 240V to 12V transformer).
Three wires are also attached to the Neutral terminal: the first comes from the feed, the second goes to the fan isolator (and then on to the fan) and the third goes to the fan light (via the transformer).
Here is the problem:If the fan isolator switch is on and I turn the fan and light switch on, the fan hums, but hardly moves round at all, and the light is very dim. I measured the voltage going to both the fan and the transformer (for the light) and it came in each case to about 50V (not 240V) which means perhaps (I am not an electrician) that they are in series? If I remove the light altogether, the fan works fine. If I remove the fan, the light works fine. What am I doing wrong?
Three wires are attached to the Live terminal: the first from the feed, the second to the light and fan switch (located outside the shower room) and the third to the fan isolator (and then on to the timer fan).
Three wires are also attached to the Switched Live terminal: the first comes from the light and fan switch, the second goes to the fan isolator (and then on to the fan) and the third goes to the shower light (via a 240V to 12V transformer).
Three wires are also attached to the Neutral terminal: the first comes from the feed, the second goes to the fan isolator (and then on to the fan) and the third goes to the fan light (via the transformer).
Here is the problem:If the fan isolator switch is on and I turn the fan and light switch on, the fan hums, but hardly moves round at all, and the light is very dim. I measured the voltage going to both the fan and the transformer (for the light) and it came in each case to about 50V (not 240V) which means perhaps (I am not an electrician) that they are in series? If I remove the light altogether, the fan works fine. If I remove the fan, the light works fine. What am I doing wrong?