in the multimeter. Alternatively, the equipment may use a deeply recessed male banana plug, while the test lead uses a sheathed banana jack. Additionally, the test lead wire must be made with insulation rated for higher voltages. In most European countries, the standard mains power receptacle will physically accept banana and even US-style "double banana" plugs (the standard US pin spacing of is close enough to the mains plug spacing of about 19 mm, and the pin diameter is also compatible), leading to a risk of electrical shock. For this reason, throughout the European Union, audio amplifiers and loudspeakers that accept banana plugs must have plastic plugs in their sockets which can be manually removed by the user. The UK was included in the prohibition even though such mains sockets were not used there. See also Binding post Gender of connectors and fasteners Notes References External links What Size Banana Plug are you using? DC power connectors Electrical signal connectors