I am about to install a new high integrity wylex fuseboard within a church which will require a combined type 1 2 spd as the church has a lightning conductor system in place. A house or building is split into lightning protection zones lpz as a potential surge passes between one zone to another this is where the appropriate spd should be fitted eg.
Mains Supply And Consumer Unit
Wylex spd wiring diagram. Continuous voltage uc 350 260 v. Discharge current imax 40 ka. More electrical tips and diagrams wwwaboutelectricitycouk like subscribe and dont skip the ads shopping list. Garageshed consumer unit. In this video we look at the layout of a wylex 10 way dual rcd consumer unit. Wiring of the installation and cause damage by considering which device to install.
Type 12 surge arresters combine the benefits of both type 1 and type 2 having both high impulse current withstand 10350µs associated with direct lightning strikes and a low voltage protection level of 15kv up exceeding the requirements for category ii equipment identified within table 443 bs7671. Understanding the layout of your uk consumer unit fuse box including identifying conductors with numbers. Surge protection devices spds are designed to absorb transient overvoltages within electrical installations protecting electronic equipment downstream from the device. I agree that we dont need to fit under the domestic value clause but napit are advising that refusal by the customer is listed on the cert. If a surge does happen and the insurance company gets involved they will probably try to get out of paying due to this or the customer. Electrical meter primary 277480.
We prised apart a wylex type 2 device to see whats inside and explain what functions the various components perform. Nominal discharge current in 20 ka. Find out how to wire rcds in split consumer unit. Iv equipment intended to be used at or in the proximity of the electrical installation 230240 6 upstream of the main distribution board eg. Between the outside lpz0a to the inside of a building lpz1 spd. We should fit them.
I need to agree that the domestic get out for spd fitting is fraught with danger for us. Boards circuit breakers wiring systems and equipment for industrial use stationary motors with permanent connection to the fixed installation. Can anybody confirm the connections to this as it is placed within the fuseboard upstream of the main switch.
Gallery of Wylex Spd Wiring Diagram
