TANDEM WIRING
CONFIGURATIONS

Number of
Lamps per
Configuration

Number of
Lamps per
Cross Section

Number of
Fixtures per
Configuration

Configuration Structure
with Ballast Location
1
2
2
3
3
4
4
4
4
4
4
4
6
6
6
6
6
6
6
8
8
8
9
12
1
2
1
3
1
4
4
2
2
1
1
6
6
6
2
3
3
3
3
8
8
2
3
3
1
1
1
1
2
1
1
2
1
4
2
1
1
1
2
2
1
1
1
1
1
2
2
2
1 Lamp Ballast
2 Lamp Ballast
2 Lamp Ballast
3 Lamp Ballast
3 Lamp Ballast
4 Lamp Ballast
2 - 2 Lamp Ballast
4 Lamp Ballast  
4 Lamp Ballast
4 Lamp Ballast      
4 Lamp Ballast  
2 - 3 Lamp Ballast
3 - 2 Lamp Ballast
4 & 2 Lamp Ballast
2 - 3 Lamp Ballast  
4 Lamp Ballast 2 Lamp Ballast
4 & 2 Lamp Ballast
2 - 3 Lamp Ballast
3 - 2 Lamp Ballast
4 - 2 Lamp Ballast
2 - 4 Lamp Ballast
2 - 4 Lamp Ballast  
2 - 3 Lamp Ballast 3 Lamp Ballast
2 - 4 Lamp Ballast 4 Lamp Ballast
Configurations are designed to build 4', 6', 8', and 16' lighting units utilizing 2', 3', 4', 6', or 8' fixtures allowing in-line lamp configurations.
Tandem Wiring Configuration

A
A B
A B
A B
A B C D

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