Electrical and Installation Guides

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257 technical guides for choosing Electrical and Installation products: selection criteria, standards, common mistakes and frequently asked questions.

What is the difference between screw and spring (push-in) DIN rail terminal blocks? — Compare screw-clamp, spring-cage and push-in DIN rail terminal blocks across vibration resistance, wiring time, conductor cross-section range and maintenance.
What Is a PCB Standoff? Types and Selection Criteria — A PCB standoff is a nylon support that holds an electronic board at a set height above a panel, box or device housing and insulated from it.
What Is a Surge-Protected Socket? Types and Selection Criteria — A surge-protected socket is a single or multiple socket that absorbs sudden mains voltage surges or cuts its output when voltage leaves set limits, protecting electronic devices.
What Is a Plastic Spiral Conduit with Pull Wire? Types and Selection — A plastic spiral conduit with pull wire is a corrugated, flexible plastic cable conduit with a draw wire placed inside during manufacture to pull cable in later.
What Is a Security Camera? Types and Selection Criteria — A security camera monitors an area continuously or on motion and sends the picture to a phone or recorder over a wired or wireless connection.
What Is a Terminal Block Feed Module? Use and Selection Criteria — A terminal block feed module is a passive input terminal fitted at the start of a mini terminal block row, where the thicker supply conductor connects; it is not a power supply.
What Is a 2-In 2-Out Test Terminal Block? Uses and Selection Criteria — A 2-in 2-out test terminal block is a DIN rail terminal block with two push-in connection points on each side, used as a check point in the control panel.
What Is Heavy-Duty PVC-Coated Galvanized Spiral Conduit? Types and Selection — Heavy-duty PVC-coated galvanized spiral conduit is a metal cable protection conduit, also known as liquid-tight conduit, whose flexible galvanized steel body is covered by a liquid-tight PVC sheath.
What Is a Blade-Type Insulated Cable Terminal? Types and Selection — A blade-type insulated cable terminal has an insulated crimp barrel and a flat tongue; it connects stranded conductors to terminal block and breaker entries without fraying.
What Is an Arc Welding Plug and Socket? Types and Selection — An arc welding plug and socket is a single-pole high-current connector that detachably joins a welding machine's output to the welding cable, or two welding cables.
What Is a Pin-Type Cable Terminal? Types and Selection Criteria — A pin-type insulated cable terminal is a connection end with an insulated barrel crimped onto a stranded conductor and a solid round pin that goes into the terminal block entry.
What Is Cloth Tape? Fleece and Non-Fleece Types, Selection Criteria — Cloth tape is an adhesive wrapping tape with a woven fabric or fleece carrier; it holds cable bundles together, protects against abrasion and reduces rattling.
What Is Steel Wire Braided PVC-Coated Galvanized Spiral Conduit? Types and Selection — A steel wire braided PVC-coated galvanized spiral conduit is a cable protection conduit with a galvanized steel core, PVC jacket and outer steel braid, resisting liquids and abrasion.
What Is Floor Cable Trunking? Types and Selection Criteria — Floor cable trunking, also called herringbone trunking, is low, curved plastic trunking that covers cables laid on the floor and can be walked over.
What Is an SR-Type Sealed Cable Gland? Types and Selection Criteria — An SR-type sealed cable gland is a plastic gland with a slit seal that brings a pre-assembled cable with a plug such as RJ-45 into a panel or device housing without removing the plug.
What Is a Steel Wire Braided Galvanized Spiral Conduit? Types and Selection — A steel wire braided galvanized spiral conduit is an all-metal cable protection conduit whose flexible galvanized steel body is wrapped in a wear-resistant steel wire braid.
What Is a Resin Cable Joint? Splice Kit Types and Selection Criteria — A resin cable joint is a cable splice kit that covers the splice of a low-voltage power cable with insulating resin poured into a mould and seals it against moisture.
What Is Double-Sided Tape? Types and Selection Criteria — Double-sided tape is a roll tape with adhesive on both faces that bonds two surfaces together without screws or holes.
What Is a Crocodile Clip? Types and Selection Criteria — A crocodile clip is a metal clamp with spring-loaded, toothed jaws that attaches to a conductor or measuring point to make a temporary electrical connection.
What Is a Meter Box? Types and Selection Criteria — A meter box is an enclosure with a cover that protects the electricity meter and the fuses connected to it from external influences and unauthorised tampering.
What Is a 2-In 2-Out Terminal Block? Uses and Selection Criteria — A 2-in 2-out terminal block is a DIN rail terminal block with two connection points on each side, joining four conductors at the same potential.
What Is a Heating Thermostat? Operating Principle and Selection Criteria — A heating thermostat switches on the panel heater through its NC contact when the panel temperature falls below the setpoint and stops it as the temperature rises.
What Is a Hot Runner Connector Box? Types and Selection Criteria — A hot runner connector box gathers the heater and thermocouple wires of an injection mould and links them to the controller through the multi-contact connector mounted on it.
What Is a Deep Junction Box with Plugs? Sizes and Selection Criteria — A deep junction box with plugs is a surface-mounted ABS box with an opaque cover, plugged cable entries and more depth than a standard box with the same base.