Photocontrol Guide

Part 1: Engineering
1. Introduction

2. Control Basics
2.1 Thermal Controls
2.2 AC Relay Controls
2.3 AC Relay Controls with time Delay
2.4 Electronic Control with thermal Switch
2.5 Electronic Controls with DC Relays
2.6 Parts of a Photocontrol: Bases, Legs, Cover
2.7 Photosensor
2.8 Surge Protection

3 Photocontrol Options and Variations
3.1 Time Delay
3.2 Hermetic Cell
3.3 Sealed Housing
3.4 Fail-OFF
3.5 Upward Facing
3.6 Dual Voltage (Multivoltage)
3.7 Button Controls
3.8 High Temperature Controls (Floodlight Controls)
3.9 Custom Colors
3.10 Inverse Ratio
3.11 Projectile Resistant Controls
3.12 Higher Light Levels
3.13 Part Night Control
3.14 Diagnostic Controls
3.15 Reverse controls

4 Outside the Control
4.1 Orientation
4.2 Load
4.3 Handling
4.4 277 volt Lines

5 Agency Involvement

6 Life

Part 2: Economics

1. Introduction

2. Economic Framework
2.1 Revenues
2.2 Lighting System Costs
2.2.1 Energy Usage: Photocontrol settings, Failure rates, Drift
2.2.2 Maintenance Costs

3 Analysis

4 Summary

Part 3: Recommended Specifications

Photocontrol Reading List