This user manual contains instructions for installing Square D brand NQ circuit breaker panelboards and QONQ load centers. (Please also see Addendum 80043-863-01.) Topics include: Interior mounting instructions, neutral bonding strap installation, QO/QOB circuit breaker installation and removal for NQ/NQM panelboards, interior trim preparation, NQ NQM typical wiring diagrams and information, NQ/NQM panelboard ratings, NQ panelboard critical circuit breaker selectivity, and available accessory kits including: NQ/NQM/QONQ equipment ground bars, NQ/NQM/QONQ lug kits, NQ/NQM/QONQ sub-feed lug kits, and NQ/NQM/QONQ main lug kits. Document number 80043-712-06