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Field glossary

Terms — Z

13 field terms starting with Z, 2 with a full reference page. Each links to the Anvilfield guides where the term is used on the job.

Zero-pressure accumulation
Zone logic that backs product up without the cases pressing on each other, so a sorter or scanner can meter themIn: Conveyor system installation
Zero-sequence sensing
A single window CT around all conductors that reads the net imbalance directlyIn: GFPE field guide
Zeroscape
Gravel and rock with few or no plants; the bare, hot look xeriscape is mistaken for, not the same thingIn: Xeriscape and drought-tolerant design
Zinc whisker
A conductive zinc crystal grown from electroplated zinc by internal stress, which breaks loose and shorts electronicsIn: Zinc whiskers and contamination control
Zinc-rich primer
A primer loaded with metallic zinc that protects the steel galvanically even at a scratch or holidayIn: Protective coatings and blasting
Zombie server
A powered-on machine doing no useful work that holds power, cooling, space, and ports for nothingIn: Stranded capacity and power utilization
Zone
An area conditioned and controlled on its own, with its own thermostat and damperIn: HVAC zoning systems field guideHazardous classified locationsLeak detection commissioning
Zone control panel
The board that reads thermostat calls, drives the dampers, and stages the equipmentIn: HVAC zoning systems field guide
Zone damper
A motorized blade in the duct that opens and closes to direct air to a zoneIn: HVAC zoning systems field guide
Zone flow demand
The sum of every emitter's GPH on the zone, converted to GPM, that the supply must deliverIn: Drip irrigation design and install
Zone of protection
The volume under the chord of the rolling sphere where the structure is shielded by the terminalsIn: Lightning protection (NFPA 780)
Zoning
Dividing the system so a page or message reaches one area without sounding everywhere, and so priority can be enforcedIn: Intercom and paging design field guide
ZSI
Zone-selective interlocking; breakers signal each other so the upstream device trips fast only for a fault in its own zoneIn: GFPE field guideArc energy reduction methodsSelective coordination field guide
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All glossary terms

On the job

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