Electrical and Installation Guides Page 3: 257 technical guides for choosing Electrical and Installation products: selection criteria, standards, common mistakes and frequently asked questions.
What Are Male and Female Plugs? Types and Selection Criteria — A household plug is a rewireable male or female plug fitted to the end of a flexible cable to connect a device to a socket or to make an extension cable of any length. What Is a Room or Floor Thermostat? Types and Selection Criteria — A room thermostat is a control device that measures the temperature of the room it is in and switches a boiler, fan coil or valve actuator on and off according to the set temperature. What Is a Fuse Holder? Types and Selection Criteria — A fuse holder is a carrier that takes a cartridge or glass fuse, connects it to the circuit and makes it easy to replace; the protection value is set by the fuse fitted. What Is a Hybrid-Connection Terminal Block? Uses and Selection Criteria — A hybrid-connection terminal block is a DIN rail terminal block with a screw connection at one end and a push-in spring connection at the other, in one housing. What Is a Caravan Plug and Socket? Types and Selection Criteria — Caravan plugs and sockets are the 16 A connection hardware, made up of an inlet plug, a CEE power cable and adapters, that connects a caravan to the supply point at a campsite or at home. What Is a Label Holder? Types and Selection Criteria — A label holder is a plastic plate or slot that fixes an identification label to a cable or cable bundle with a cable tie, or to a panel surface with adhesive. What Is a Brass Swivel Spiral Fitting? Uses and Selection Criteria — A brass swivel spiral fitting has a threaded part that turns independently of its body and connects galvanized metal spiral conduit to an entry without twisting it. What Is Slit Polypropylene Spiral Conduit? Types and Selection Criteria — Slit polypropylene spiral conduit is a corrugated PP cable protection conduit whose lengthwise slit lets cables be inserted from the side without removing their ends. What Is a Spiral Wrap? Types and Selection Criteria — A spiral wrap is a flexible plastic wrap cut in a helix that is wound around a cable bundle to hold the cables together and protect them against abrasion. What Is PVC-Coated Galvanized Spiral Conduit? Types and Selection Criteria — PVC-coated galvanized spiral conduit is a metal conduit whose flexible galvanized steel body is PVC-sheathed, protecting cable against crushing, moisture, dust and splashes. What Is a Cable Holder? Cable Clamp Types and Selection Criteria — A cable holder fixes a cable or cable bundle to surfaces such as enclosures, machine housings and walls; it comes as screw-fixed nylon clamps and adhesive holders. What Is a Polypropylene Spiral Conduit? Types and Selection Criteria — A polypropylene spiral conduit is a lightweight, flexible conduit made of polypropylene (PP) that bends easily thanks to its corrugated body and protects cable bundles in enclosures and on machines. What Is a Switch and Socket Mounting Frame? Types and Selection Criteria — A switch and socket mounting frame is the inner carrier plate in modular ranges onto which the mechanisms are fitted and which is fixed to the flush box with screws or claws. What Is a Panel Wiring Duct? Types, Sizes and Selection — A panel wiring duct is a plastic duct with slotted side walls and a snap-on cover, fixed to the mounting plate inside an electrical panel. What Is an External-Type Brass Swivel Spiral Fitting? Types and Selection — An external-type brass swivel spiral fitting connects heavy-duty and steel wire braided metal spiral conduit to a panel or box entry without twisting the fixed conduit. What Is a Tap-Off Terminal Block? Uses and Selection Criteria — A tap-off terminal block is used with a large-cross-section DIN rail terminal block to take a thinner branch conductor without cutting the main conductor. What Is Insulating Tape? Types, Color Code and Selection Criteria — Insulating tape is an electrical tape made of flexible PVC film with adhesive on one side, used to insulate low-voltage joints and mark conductors by color. What Is a Cable Gland Plug? Sizes and Selection Criteria — A cable gland plug is a plastic plug that closes the cable entry of a fitted cable gland with no cable through it until the cable is run. What Is a Gland Gasket (Multi-Hole Insert)? Types and Selection Criteria — A gland gasket is the elastic part that surrounds the cable inside a cable gland and seals the entry; a multi-hole gasket lets several cables pass through one gland. What Is a Horizontal Metal Enclosure? Sizes and Selection Criteria — A horizontal metal enclosure is a painted sheet steel control enclosure made wider than it is tall and mounted on a wall or a machine body. What Is Steel Wire Braided Polyamide Spiral Conduit? Types and Selection — A steel wire braided polyamide spiral conduit is a flexible corrugated polyamide cable conduit with an outer steel wire braid against abrasion and impact. What Is a Plug-In Junction Box Terminal Block? Types and Selection Criteria — A plug-in junction box terminal block is a multi-entry splicing component in which a stripped solid conductor is pushed in and held without screws. What Is an External-Type Brass Fixed Spiral Fitting? Types and Selection — An external-type brass fixed spiral fitting is a one-piece fitting that connects heavy-duty and steel wire braided metal spiral conduit to a panel or box entry. What Is a Mounting Plate? Types and Selection Criteria — A mounting plate is a sheet steel or plastic base plate fitted into a panel or junction box housing, to which devices such as rails, terminal blocks and contactors are fixed.