hope you can help .i need to install a changeover switch just after the suppliers incomer , the suppliers meter is about 1m away from the planned position of the change over switch, the consumer unit this is all supplying is about 20m further on supplied by a 25mm cable .i plan on installing a 100a switch fuse to protect this run of cable .my question is which side of the changeover switch do i put the switch fuse .thanks
electrical change over switch
- Thread starter tiggerfootball
- Start date
You don't.
The electrician you get to do this job does it.
The electrician you get to do this job does it.
Assuming the changeover switch is also rated to 100A, it would make sense for the switchfuse to be installed after the changeover, as this will protect the 25mm cable run irrespective of the position of the C/O swith contacts. However, you may want to speak to your supplier (and eventually get put through to the DNO) to see if they are happy for you to have their service fuse protecting this installation. Personally, I can't see much difference between your scenario with a 100A C/O and a standard install where the supplier's fuse protects a 100A DP isolator.
That's a very presumptuous statement, given that you don't know the OP's background, and whether or not this job is LABC notified.
It just struck me that someone who had to ask a Q like that was probably not competent to be doing a job like that.
Could I ask what the c/o switch is to be used for - just being nosey.
For a generator I reckon.
Better than the old widowmaker.
Better than the old widowmaker.
I hope you mean after the supplier's meter - you can't install a changeover switch (or anything else) between the incomer and the meter, it's not yours to touch and I doubt your supplier is going to agree to help you tap off a feed before the meter - I guess they might agree to install a sealed changeover switch for you, and a suitable connector, at a price.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
