A surge protection device can be installed in two locations:
1. The consumer unit. This is the easiest to install but it takes up two spaces which may not always be available.
2. The isolator switch. This is more difficult to install as it involves having to remove the big fuse but it avoids taking up two spaces in the consumer unit.
Does anybody have any more comments or advice on the best location?
Proteus sells an attractive looking isolator switch with a 2 module SPD although it is a bit pricey compared with SPD modules for consumer units. Has anybody got experience of it?
Who actually owns an already installed isolator switch? Is it National Grid, the utility company, or the property owner?