Surface Isolator 4-Pole 40 Amps (415V) HT TBOX-17 and the connection should be

and the connection should be short and thick and to ensure that the grounding resistance is less than 10Ω(10 Ohms)

this warning light is highly visible even in dim lighting

Additional Information Colour White Watt 13W - 3 Colour Changeable Voltage  AC 220-240V Item Dimensions Material  Plastic Warranty 1 year Application Livingroom

Grey & White Amp 13A Voltage AC 250V~50/60Hz Item Dimensions H 90mm x W 120mm Material Bakelite Installation Assembled Warranty  1 Year Application Living room and Bedroom

Surface Isolator 4-Pole 40 Amps (415V) HT TBOX-17 and the connection should beIn electrical engineering, Isolator switch is used to ensure that an electrical circuit is completely de energized for service or maintenance. They are only used for breaking the circuit and are often found in electrical distribution and industrial applications, where machinery must have its source of driving power removed for adjustment or repair. Disconnectors can be manual or motor operated and may be paired with an earthing switch to ground the