Available in both 2 pole and 4 pole versions type b residual current circuit breakers rccbs provide total protection for all known residual current faults. Pv plus bus red wire battery negative black wire ground ac in blackred wire ac out blackred wire.
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Lewden spd wiring diagram. It is designed for universalapplication for the protection of electrical appliances against impulsesurge effects when connected to lv supply systemsthe device is suitable for installation at the boundaries of both lightning protection zones lpz 0 1 and lpz 1 2. The surge protection device spd is a component of the electrical installation protection system. Srg1vcu is a single phase surge arrester suitable for use intn c s pme tn s tt network systems. How to fit a type 2 spd and keep the line and earth conductors at 05m or less. We fit the spd remote from the consumer unit proving how hard it is to keep c. J17it can also be used at all levels of the power supply network.
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. When conduc ng insula on resistance tests on the installa on remove either the plug in cartridge or the earth cable to the device. This device is connected in parallel on the power supply circuit of the loads that it has to protect see fig. With the latest edi on of the iet wiring regula ons for electrical installa ons bs7671 for consumer unit installa on use in conjunc on with lewden mcb type b16 1p part number g06 1b16 important. Lewden has recently introduced type b rccbs to its range of circuit protection devices in addition to the type a and type ac versions.
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