Electrical Connections
Page 6
April 2017
VAM-UM-00646-EN-04
ELECTRICAL CONNECTIONS
All Flow-Alert flow meters are offered with either single or dual switches Consult local
wiring codes before applying power
Wiring through Conduit
Some installations may require a rigid conduit for the wiring To access a conduit
connection:
• For microswitch equipped models only:
Remove the black, watertight strain-relief/gland connection from the outside of
the enclosure
• For all other models (excluding strap assembly models):
Remove the Hirshmann connection from the outside of the enclosure
Microswitch Configurations
The strain-relief/gland connection outside of the microswitch enclosure is watertight
Microswitch Cable Specifications
Single Switch: 4-Wire #18 AWG, SJO Jacket Cable
Color
Function
Cable Length: 1/4…1 in. Meters Cable Length: 1-1/4…1-1/2
in. Meters
Inside Enclosure
Overall
Inside Enclosure Overall
Red
Normally Closed (NC)
400 in
(10160 mm)
420 in
(10668 cm)
600 in
(15240 mm)
500 in
(12700
cm)
Black
Normally Open (NO)
White
Common
Green
Ground
200 in
(5080 mm)
500 in
(12700 mm)
Table 1: Microswitch single switch specifications
Dual Switch: 7-Wire #16 AWG, SJO Jacketed Cable
Color
Function
Switch ID
Cable Length for 1/4…1
in. Meters
Cable Length for 1-1/4…
1-1/2 in. Meters
Inside
Enclosure
Overall
Inside
Enclosure
Overall
Red
Normally Closed
(NC)
Switch 1
Decreasing
Switch
400 in
(10160 mm)
280 in
(71120 mm)
100 in
(25400 mm)
350 in
(88900 mm)
Black
Normally Open (NO)
White
Common
Orange
Normally Closed
(NC)
Switch 2
Increasing
Switch
105 in
(26670 mm)
150 in
(38100 mm)
Blue
Normally Open (NO)
White/
Black
Common
Green
Ground
200 in
(5080 mm)
500 in
(12700 mm)
Table 2: Microswitch dual switch specifications
