New Mexico Low Voltage Practice case studies
New Mexico Low Voltage Practice · Put your knowledge to work in context.
The New Mexico Low Voltage Electrical Contractor License is a state-issued credential for contractors who install, alter, and service low voltage wiring systems - the class of work that sits below the threshold where a full electrical contractor license applies. It is aimed at owners and qualifying parties of firms doing alarm, communications, data, control, and similar low voltage work in New Mexico, and it is administered through the state's electrical licensing authority. The New Mexico Low Voltage Practice case studies are 5 cases and about 3,544 words.
1Access-Control Strike on a Long 18 AWG Class 2 Circuit
An access-control retrofit in an Albuquerque office building uses a listed 24 VDC Class 2 power supply at the IDF to feed a 2.0 A electric strike at the main entrance. The one-way circuit length is 190 ft of 18 AWG stranded copper, run through ceiling space and down a wall to the door.
767 words, about 4 min2NAC Loading and Battery Sizing for an Assisted-Living Fire Alarm
A four-story assisted-living building has an addressable fire alarm panel with four notification appliance circuits rated 2.5 A each at 24 VDC. On NAC 3, the contractor plans 18 wall-mounted horn/strobes, each drawing 65 mA at 24 VDC, wired on a single Class B path of 14 AWG stranded copper.
583 words, about 3 min3Return-Air Plenum Cable Substitution in a Tenant Fit-Out
A 2,600 sq ft tenant fit-out in a Santa Fe office building has a suspended acoustical ceiling, and the space above it is used as a return-air plenum. The low-voltage subcontractor pulled 12 runs of Cat 6 CMR for data, 6 runs of 16/2 CMR for ceiling speakers, and 4 runs of FPLR 14/2 for fire alarm notification.
596 words, about 3 min4Intermittent Ground Fault on a Shielded Fire Alarm SLC
A 24 VDC addressable fire alarm panel at a Rio Rancho school reports an intermittent ground fault on SLC loop 2, usually after rain. The loop is Class B, 1,150 ft of shielded twisted pair, with the drain wire landed on the panel ground bar at the panel and also bonded to a metal junction box in the gym.
825 words, about 4 min5Bid Price, Change Order, and Verbal Authorization on a Clinic Cabling Package
A contractor licensed by the State of New Mexico is bidding a 22-drop Cat 6 data and camera package for a 9,000 sq ft clinic. The takeoff shows 22 cable runs averaging 140 ft, 22 faceplates and jacks at 14 each, and a 450 patch panel.
773 words, about 4 min