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The ECM INDUSTRIES LLC 21-100 is an insulated, solderless tap splice connector designed for making quick mid-run wire connections without cutting or interrupting the main conductor. Sold in a 5-pack, these connectors accept wire gauges from 18 to 14 AWG, making them a practical choice for low-voltage control wiring, lighting circuits, and similar field applications. The insulated body protects the connection point after installation, and no solder or special tooling is required to complete the splice. Electricians and HVAC technicians reach for tap connectors like these when adding a branch wire to an existing run in tight spaces or during service calls.
These tap splice connectors are suited for residential and light commercial electrical work where a fast, reliable branch connection is needed on 18 to 14 AWG conductors. Typical applications include thermostat wiring, low-voltage control circuits, fixture branch runs, and accessory wiring in HVAC and electrical systems. The resealable clamshell packaging keeps unused connectors organized and protected between jobs.
Designed for use with 18 to 14 AWG insulated copper conductors in low-voltage control, lighting, and general electrical branch-wiring applications.
Installation is performed by a licensed electrician or qualified HVAC technician following applicable NEC guidelines. De-energize the circuit completely before making any splice connection. Insert the tap and main conductors into the correct ports and compress the connector with lineman pliers or the tool specified by the manufacturer until the piercing contact seats fully. Inspect the insulated housing for damage before leaving the connection in service.
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