UL 924 UL 1778 OSHPD/HCAI ISO 9001

Emergency Lighting Inverters

The widest range from a single manufacturer — 35W to 400kW. Pure sine wave output, zero transfer time, built to order in Los Angeles since 1975.

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Range

35W – 400 kW

Runtime

90 – 120 min

Transfer

Zero (online)

Configurations

1Ø & 3Ø

10 Models Available

Click any model for full specs, data sheets, and CAD files

Power Wave 1 by Online Power

Power Wave 1

Single Phase, 2.1 – 17kW

Single phase emergency lighting inverter listed to UL924 and UL1778. Pure sine wave output providing 90-120 minute battery backup with zero transfer time, TVSS surge suppression, and microprocessor-controlled LCD self-testing.

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Power Wave 3 by Online Power

Power Wave 3

Three Phase, 8 – 50kW

Three phase emergency lighting inverter listed to UL924 and UL1778. Internal maintenance bypass, TVSS surge suppression, and 90-120 minute battery backup with main input/output breakers.

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Power Wave 4 by Online Power

Power Wave 4

Three Phase, 8 – 400kW

High-capacity three phase emergency lighting inverter with field-selectable UPS Double Conversion or Green Mode. Independent phase control, GMS remote monitoring, and internal maintenance bypass.

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Mini Power Wave by Online Power

Mini Power Wave

Single Phase, 500W – 2.7kW

Compact single phase UL924 emergency lighting inverter. Both inverter electronics and backup batteries fit into a single enclosure, ideal for small spaces. Pure sine wave output with 90-120 minute backup.

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Micro Power Wave by Online Power

Micro Power Wave

Single Phase, 200W – 490W

Ultra-compact single phase emergency lighting inverter listed to UL924. Electronics and batteries in a single enclosure for tight spaces. 90-minute minimum battery backup.

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Nano Power Wave by Online Power

Nano Power Wave

Single Phase, 35W – 100W (Lithium Ion)

Lithium ion powered UL924 remote emergency lighting dimming inverter for LED and fluorescent fixtures. Supports 90-minute emergency lighting with option to derate for 2-hour run time per Life Safety Code.

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Harsh Environment UPS by Online Power

Harsh Environment UPS

Single Phase, 2.1 – 17kW

Emergency lighting inverter built for industrial conditions. Conformal coated electronics, filtered ventilation, and NEMA 3R steel enclosure withstand tough environments while maintaining UL924 compliance.

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SV Power Wave 1 by Online Power

SV Power Wave 1

Seismic Certified, Single Phase, 3 – 17kW

Shaker table tested and OSHPD/HCAI certified single phase emergency lighting inverter. Approved for California hospitals and seismic zones with zero transfer time technology.

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SV Power Wave 3 by Online Power

SV Power Wave 3

Seismic Certified, Three Phase, 8 – 50kW

Shaker table tested and OSHPD/HCAI certified three phase emergency lighting inverter for seismic zones and California hospital applications.

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SV Power Wave 4 by Online Power

SV Power Wave 4

Seismic Certified, Three Phase, 8 – 400kW

Shaker table tested OSHPD/HCAI certified high-capacity three phase inverter with independent phase control and GMS remote monitoring for seismic applications.

Specs & Data Sheets →

Why Centralized Emergency Lighting

Full brightness for the full 90 minutes

Distributed battery packs dim as they discharge, often dropping below the 0.6 fc minimum NFPA 101 requires at the 90-minute mark. Online Power inverters maintain full rated output from first second to last.

Pure sine wave — every LED driver, every time

Modified sine wave inverters cause LED flickering, buzzing, and premature driver failure. Online Power's pure sine wave output with less than 3% THD is identical to utility power.

One system replaces hundreds of battery packs

Centralized batteries last 10-15 years versus 3-5 for distributed packs. One annual 90-minute test replaces hundreds of individual fixture tests — cutting maintenance labor by up to 90%.

Resources & Training

Product Training

At our plant, virtual, or at your office. Hands-on with our engineering team.

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Code Requirements

  • UL 924 — Emergency Lighting Equipment
  • NEC Article 700 — Emergency Systems
  • NFPA 101 §7.9 — Life Safety Code
  • NFPA 110 — Emergency Power Systems
  • OSHPD/HCAI — Seismic Certification

Engineering Support

24-hour load calculations. LED driver compatibility verification. Custom configurations.

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"Online Power has been our go-to for emergency lighting inverters. Their engineering team is responsive and the products are absolutely rock solid."

Alex Jenkins

Green MEP Engineering

Common Questions

Emergency Lighting FAQ

What is a UL 924 emergency lighting inverter?
A UL 924 emergency lighting inverter is a centralized power source that provides uninterrupted AC power to emergency lighting fixtures during utility failure. It must reach full output within 10 seconds of power loss and maintain rated output for at least 90 minutes per NFPA 101 §7.9.
Centralized vs distributed (battery-pack) emergency lighting — which is better?
Centralized inverters like Online Power's Power Wave series outlast distributed battery packs 2–3x (10–15 year battery life vs 3–5 years), maintain full brightness to minute 90 (distributed packs dim as they discharge), and replace hundreds of annual fixture tests with a single 90-minute system test.
What power range do Online Power emergency lighting inverters cover?
Online Power manufactures the widest range from a single US manufacturer: 35W to 400kW. Models include Nano Power Wave (35–100W lithium ion), Micro Power Wave (200–490W), Mini Power Wave (500W–2.7kW), Power Wave 1 (single-phase 2.1–17kW), Power Wave 3 (three-phase 8–50kW), and Power Wave 4 (three-phase 8–400kW).
Are Online Power inverters certified for California hospitals (OSHPD/HCAI)?
Yes. The SV Power Wave 1, SV Power Wave 3, and SV Power Wave 4 are shaker-table tested and OSHPD/HCAI seismic certified for California hospital construction.
Do Online Power inverters work with LED and dimmable fixtures?
Yes. All Power Wave models produce pure sine wave output (<3% THD) compatible with every LED driver, fluorescent ballast, and dimmer. Use with the LCR20 load control relay for automatic 0-10V dimmer override during emergency mode.

Ready to Spec Emergency Lighting?

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