Connectors Reduce PV Transition Box Wiring Times

connectorsreducepvtransitionboxwiringtimes

Connector
Reduce photovoltaic transition box wiring times by up to 50% through no-twist connections with WAGO Corporation’s 773 Series WALL-NUTS™ splicing terminals. WALL-NUTS™ PUSH WIRE® terminations eliminate time-consuming twisting or crimping required by traditional twist- or butt-style connectors. Simply insert a stripped conductor and push it in.

The resulting terminations streamline the transition between PV cables (e.g., multi-contact USE-2 type conductors used in PV arrays) and standard cables (e.g., THHN/THWN 2-type conductors). Additionally, OSHA-approved WALL-NUTS™ reduce operator strain, and the clear housing provides visual confirmation of terminations. The housing also features an integrated test-port for convenient continuity testing.

Ambient and current-induced temperature changes can compromise other connector types through thermal cycling — expansion and contraction in metal parts. Eventually, these connections will exhibit diminished performance that can lead to electrical failures. WALL-NUTS™ automatically adjusts for temperature cycling and settling strands, providing maintenance-free terminations.

Available in 2- to 8-pole configurations, WALL-NUTS™ terminates solid or stranded conductors ranging in size from 10…18 AWG. Standard WALL-NUTS™ models are UL listed at 600V, with a 20A maximum current capacity and also feature a max operating temperature of 105°C. A specialty high-temperature variant builds on these ratings with an extended operating range of 150°C. In addition to UL Listing, WALL-NUTS™ carry CSA Certification.