Hi. I intend to fit an extractor fan with timer in the bathroom ceiling, to work independently from the light, with a separate pull cord switch.
I've fitted extractor fans before, although not one with a timer, but I have a few questions to ensure it's done right -
1. The fan will be situated away from the shower and bath, although above the sink. Does it need to be a low voltage one because of this.
2. Because it will be a fan with a timer, therefore having a permanent live, I assume I will need a fan isolator switch. Does this have to be situated outside of the bathroom, and if so is it allowed in the loft space above the fan.
3. If I choose to have a fan without a timer, do I still have to have a fan isolator switch, or is it ok to just use a double pole pull cord.
4. I am taking the feed from a junction box in the loft space above, which feeds a light and smoke alarm. I assume it's usual to take both live wires (i.e. the normal live and the permanent live) from the same terminal in the junction box.
5. As the cable (3 core and earth) will run from the existing junction box in the loft, to the pull cord switch first, then to the fan isolator switch, then to the fan, (if that order is correct), is it ok to simply connect the permanent live to the input terminal in the pull cord switch. i.e. the permanent live will run from the junction box in the loft, to the input terminal on the pull cord, then to the fan isolator switch, then to the fan. So obviously when the pull cord is switched off, it doesn't affect the permanent live, so the timer on the fan will still operate.
This is such a great forum.
Help appreciated as always, thanks.
I've fitted extractor fans before, although not one with a timer, but I have a few questions to ensure it's done right -
1. The fan will be situated away from the shower and bath, although above the sink. Does it need to be a low voltage one because of this.
2. Because it will be a fan with a timer, therefore having a permanent live, I assume I will need a fan isolator switch. Does this have to be situated outside of the bathroom, and if so is it allowed in the loft space above the fan.
3. If I choose to have a fan without a timer, do I still have to have a fan isolator switch, or is it ok to just use a double pole pull cord.
4. I am taking the feed from a junction box in the loft space above, which feeds a light and smoke alarm. I assume it's usual to take both live wires (i.e. the normal live and the permanent live) from the same terminal in the junction box.
5. As the cable (3 core and earth) will run from the existing junction box in the loft, to the pull cord switch first, then to the fan isolator switch, then to the fan, (if that order is correct), is it ok to simply connect the permanent live to the input terminal in the pull cord switch. i.e. the permanent live will run from the junction box in the loft, to the input terminal on the pull cord, then to the fan isolator switch, then to the fan. So obviously when the pull cord is switched off, it doesn't affect the permanent live, so the timer on the fan will still operate.
This is such a great forum.
Help appreciated as always, thanks.