The type 1 spd is with the main incomer the type 2 is with the sub board and the type 3 where you may expect to see a plug top fuse or similar device. In this video we look at the layout of a wylex 10 way dual rcd consumer unit.
Nhspd4621t2 Type 2 Transient Voltage Surge Arrester Tvss
Wylex spd wiring diagram. Boards circuit breakers wiring systems and equipment for industrial use stationary motors with permanent connection to the fixed installation. Wiring of the installation and cause damage by considering which device to install. Find out how to wire rcds in split consumer unit. Hi this spd will fit in the flexible nm units but not those with a fixed busbar. This also follows the lpz or lightning protection zone concept of breaking down. Pv plus bus red wire battery negative black wire ground ac in blackred wire ac out blackred wire.
Understanding the layout of your uk consumer unit fuse box including identifying conductors with numbers. Between the outside lpz0a to the inside of a building lpz1 spd. The conductors used to connect the spd to the line or bus shall not be any longer than necessary and shall avoid unnecessary bends green wire the following represents a wiring diagram of spds in a typical system. More electrical tips and diagrams wwwaboutelectricitycouk like subscribe and dont skip the ads shopping list. Does this fit in the nm range of consumer units asked by. Nhspd4143t1 4 mod din mounting spd with remote indication contact tn c single phase supply l1.
This means that there will be many spds within the installation as there will already be fuses or circuit breakers. 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. Thanks for your interest in wylex products. Incoming feeder is smaller or equal to the spd maximum fuse rating in this situation utilising the incoming supply fuses for service and spd protection will ensure the protection device is exposed to the entire surge current. Spd will be exposed to the maximum surge current and provide the best protection for the site. 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.
Garageshed consumer unit. In the wiring diagram it shows two. This guide to wylex surge protection devices is not.
Gallery of Wylex Spd Wiring Diagram
