I was recently asked to install a CPN cudis lumo consumer unit by a client, what a horrible and badly designed unit. I didn't like the look of it from the beginning, it felt and looked cheap and nasty, the MCB's supplied where the same, cheap and nasty as did the RCD units and main switch. The incoming supply to the board would be at the top of the DB and was an SWA, this DB has a metal lip at the top of it and the earth and neutral bars are located at the top aswell, due to this there is no way to get anything in to tighten the SWA locking ring, I had to take the SWA gland apart so I could get it securely fixed and then put the gland back together. After fighting, cursing and a few choice words it was installed, when I asked the client why they had bought it they told me they had been told it was the best board on the market and was what every Electrician is installing. When I informed them that I only ever install Schneider or MK (personal preference) the client replied that they never chose that make due to being to expensive? So I asked what they had been quoted for the boards, Schneider with MCB's-£576 +VAT, MK with MCB's-£519 +VAT and the CPN with MCB's-£280 +VAT! When I asked which wholesalers they had got it from they mentioned a well known one, someone doesn't have a conscience. You can get the CPN boards online for £65 with MCB's or a Schneider or MK for £90 ish with MCB's, total madness. Any way don't use CPN boards, absolute nightmare and cheap, nasty units.