Twist-On Wire Connector · 22-14 AWG · Blue Thermoplastic Shell · NSI Industries WC-B-C

What this product is for

The NSI Industries WC-B-C is a standard twist-on wire connector used to join or cap 22-14 AWG copper conductors in residential and light commercial wiring. Its blue thermoplastic body and fixed spring design are suited to routine branch circuit splicing inside approved electrical enclosures.

Use for

Use for splicing copper conductors in device boxes, junction boxes, luminaires, and general branch circuit work. Typical applications include fixture leads, switch legs, and control wiring within the listed wire range.

Avoid for

Avoid using this connector on conductors outside the 22-14 AWG range, on unsupported aluminium conductors, or in exposed locations where a standard dry-location twist-on connector is not appropriate. Always match the connector to conductor count, insulation type, and local code requirements.

Best for

Best for electricians and contractors who need a compact twist-on connector for smaller copper wire combinations. It is a practical choice when box space is limited and a standard blue connector covers the required wire range.

Installed in

Installed in electrical boxes, luminaires, and enclosed wiring compartments in residential and light commercial installations. Typical connector body size is about 0.697 in high x 0.390 in wide (17.7 x 9.9 mm), which helps in tighter box fill conditions.

Why this product exists

This connector provides a fast, code-recognized method to make secure copper wire splices without a mechanical lug or terminal block. For common 15 A and 20 A branch circuit work, electricians typically see 14 AWG and smaller control or fixture conductors in this range. Actual suitability depends on conductor combination, insulation thickness, installation conditions, and local electrical code.

Compared with similar products

Compared with larger twist-on connectors, the WC-B-C is intended for smaller wire combinations within the 22-14 AWG range. Compared with push-in connectors, a twist-on connector can be preferred where installers want a traditional spring-style splice method and visual colour identification by size range.

Specifications

• Manufacturer: NSI Industries
• Part number: WC-B-C
• Product family: Easy-Twist standard wire connector
• Type: Twist-on wire connector
• Wire range: 22-14 AWG
• Conductor material: Copper wire only
• Voltage rating: 300 V
• Temperature rating: 105 deg C (221 deg F)
• Material: Thermoplastic
• Colour: Blue
• Listing: UL 486C
• Approximate size: 0.697 in H x 0.390 in W x 0.161 in ID (17.7 x 9.9 x 4.1 mm)
• Typical use: Splicing wire and dead-ending conductors in approved enclosures