I am installing a new CU where the customer has a TT supply and overhead lines in an area with reasonably high risk of lightening strike.
The customer has fairly limited electronic equipment in their home, a cheap 40 inch TV and audio system, washing machine and a cooker. No computers, fairly low cost phones.
He does not want to pay the £300+ it would cost to source and install a type 1+2 surge protector external to the CU, but is willing to pay approx £80 for a type 2 surge protector to be included in the CU.
My logic on suggesting a type 2 spd is that teh type 2 will deal with most surges from other equipment and lightening strikes in the area. it will fail to protect against direct or very close strikes but this is relatively unlikely to happen and therefore a type 2 SPD is better than doing nothing.
Would you agree with my logic and am I creating any additional risk by introducing a type 2 spd in to the system.
I appreciate that a direct hit would cause significant damage if a direct strike occurred but assume this would happen somewhere in the system anyway and it's better to have it happen inside a metal CU than somewhere else.
