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The ECM INDUSTRIES LLC 16-004 is a WireGard GB-4 yellow wire connector sold in a 200-piece medium jar. The connector uses a tight, square wire spring that grips conductors quickly and holds them securely for positive electrical continuity. This style of twist-on connector is a standard component in residential and light commercial wiring work, used wherever splicing or joining conductors is required inside junction boxes, panel enclosures, fixture housings, and device boxes. The yellow color code indicates the wire gauge range this connector is rated for. Licensed electricians and experienced installers keep a jar on hand for everyday splice work.
Wire connectors of this type are used across a broad range of electrical applications including HVAC control wiring, fixture installation, outlet and switch rough-in, and low-voltage splicing in residential and light commercial construction. The 200-piece count in a medium jar makes this a practical bench or truck-stock item for electricians and HVAC technicians who perform frequent splice work on service calls or new installations. The jar packaging allows easy one-handed access during installation.
Designed as a standard twist-on wire connector for use in residential and light commercial electrical splice applications where a yellow-rated connector is required.
Installation is performed by licensed electricians or qualified HVAC technicians in accordance with NEC guidelines. Always de-energize the circuit at the breaker and verify absence of voltage with a meter before making any splices. Strip conductors to the appropriate length, align them, and twist the connector clockwise until snug. Do not overtighten to the point of conductor damage, and confirm a firm tug test on each wire after seating the connector.
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