Splicing terminals feature no-twist connections
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Wago Corp product story
Edited by the Engineeringtalk editorial team
Jul 7, 2009
Wago Corporation's 773 Series Wall-Nuts splicing terminals may reduce photovoltaic transition box wiring times by up to 50 per cent through no-twist connections.
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 (for example, multi-contact USE-2 type conductors used in PV arrays) and standard cables (for example, 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 two- to eight-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 maximum operating temperature of 105C.
A specialty high-temperature variant builds on these ratings with an extended operating range of 150C.
In addition to UL Listing, Wall-Nuts carry CSA certification.
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