The phrase "auxiliary wire" is correct and usable in written English.
It can be used in contexts related to electrical engineering, telecommunications, or any situation where additional wiring is needed to support a primary system.
Example: "The technician installed an auxiliary wire to ensure the backup power supply would function properly during outages."
Alternatives: "supporting wire" or "secondary wire".
An external three-electrode system consisting of Au working, Ag reference and Pt auxiliary wires were installed over EWOD electrodes at the end of T-junction mixer.
For electrochemical measurements, working electrodes were placed in a classical electrochemical cell with an auxiliary (platinum wire) and a reference (Ag/AgCl in saturated KCl) electrodes connected to the PalmSens potentiostat (Palm Instruments BV, Netherlands).
Reference (Ag/AgCl, 250 µm in diameter) and auxiliary (tungsten wire, 250 µm in diameter) electrodes were implanted in contact with external meninge.
Using an external auxiliary platinum wire located in the inlet of the microdevice, the Ag electrode was coated in AgCl (in saturated KCl solution that was also saturated with AgCl through the addition of a small quantity of AgNO3) at 2 V for 3 s.
Although radio equipment came to be issued to the headquarters of all units, including battalions, the ease of enemy interception, the requirements for cryptographing or encoding messages, and the inherent unreliability of these early systems caused them to be regarded as strictly auxiliary to the wire system and reserved for emergency use when the wire lines were cut.
A three-electrode cell setup with a GC working (0.07 cm2), a platinum wire auxiliary and Ag/AgCl (3 M KCl) reference electrodes were used in the voltammetric and chronopotentiometric measurements.
A conventional three-electrode system was composed of a modified glass carbon electrode as working electrode, a platinum wire auxiliary electrode, and a saturated calomel electrode (SCE) as the reference electrode.
Voltammetric measurements were carried out using BAS100B/W Electrochemical Analyzer and Autolab 302N Voltammetric Analyzer equipped with three electrode system consisted of the as-synthesized working electrodes (GCE, PAP/GCE, Ag/PAP/GCE, Au/PAP/GCE, and Au Ag/PAP/GCE), an auxiliary electrode (Pt wire) and reference electrode (Ag/AgCl (sat. KCl)).
"Home-made" vibrating gold microwire (working electrode) and iridium wire (auxiliary electrode) electrodes were mounted onto a Metrohm VA stand.
The embedded electrode functions as the working electrode with a platinum wire auxiliary electrode and an Ag/AgCl reference electrode.
