Requirements for couplers with particular reference to safety and interchangeability. Suitable for connection to Class II portable appliances, indoor and outdoor use at voltages not exceeding 250 V at 50 Hz. Weather-resistant to IPX4.Cross References:BS 308:Part 3BS 1134:Part 1BS 1134:Part 2 BS 2782:Method 365CBS 3042BS 3643:Part 1 BS 3643:Part 2BS 4500BS 5490BS 5901 BS 6217BS 6458:Section 2.1BS 6500
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