I’ve been asked to act as a consultant between the contractor and the client at a charity run community centre who are looking to replace their incoming mains distribution.
The job comprises of installation of a new 250A TP&N Schneider panel board feeding submains to approximately nine existing distribution boards which are a mixture of TP&N and SP&N boards, and immediate replacement of one TP&N board, with at least two other boards planned to be replaced in the not too distant future.
It has been decided that the installation of SPDs is a good idea as there are some expensive pieces of sensitive kit within the installation such as the fire alarm panel, BMS panel, gas boilers, lighting dimmer racks, computers etc.
I don’t really have any experience of designing SPDs into an installation like this, and I am wondering whether standard practice would be to just install a single SPD at the panel board covering the entire installation, or if it is more desirable to have a local SPD installed in each sub board.
Any information you can offer would be greatly appreciated.
The job comprises of installation of a new 250A TP&N Schneider panel board feeding submains to approximately nine existing distribution boards which are a mixture of TP&N and SP&N boards, and immediate replacement of one TP&N board, with at least two other boards planned to be replaced in the not too distant future.
It has been decided that the installation of SPDs is a good idea as there are some expensive pieces of sensitive kit within the installation such as the fire alarm panel, BMS panel, gas boilers, lighting dimmer racks, computers etc.
I don’t really have any experience of designing SPDs into an installation like this, and I am wondering whether standard practice would be to just install a single SPD at the panel board covering the entire installation, or if it is more desirable to have a local SPD installed in each sub board.
Any information you can offer would be greatly appreciated.