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There are two questions that Ive been unable to locate in the regs book;
1. If the line conductor is 10mm2, the min size of of an associated Surge Protection Device connection conductor is?
2. A 230 V 30 A radial circuit is protected by a BS 3036 device. If the value of earth loop impedance for the circuit is 2.3@ (I think means amps?), disconnection under line/earth fault condtion will occur in:
2s, 4s, 5s, 3s?
Thanks
1. If the line conductor is 10mm2, the min size of of an associated Surge Protection Device connection conductor is?
2. A 230 V 30 A radial circuit is protected by a BS 3036 device. If the value of earth loop impedance for the circuit is 2.3@ (I think means amps?), disconnection under line/earth fault condtion will occur in:
2s, 4s, 5s, 3s?
Thanks