device 3 phase extension lead armoured cable 3 core armored cable gland swa 10mm 3 core armoured cable waterproof boxes 6 mm 3 core cable plastic adaptable boxes cable calculation armoured cable 1.5mm 3 core 1.5mm armoured cable 2.5mm armoured cable 4mm armoured cable 6mm armoured cable 10mm armoured cable 16mm armoured cable 25mm armoured cable 2 core armoured cable 3 core armoured cable 4 core armoured cable 5 core armoured cable 3 phase extension leads 240v extension leads armoured cable glands cable glands underground cable armored cable swa cables armored electrical cable armored cable glands 6mm 3 core armoured cable sy cable underground armoured cable cw20 gland pack cw25 gland pack bw20 gland pack bw25 gland pack 50mm armoured cable 25mm 4 core armoured cable 3 core armoured cable 16mm 16mm 4 core armoured cable