Grounding Grid - Weathermatic SLFSI-T10 Design Manual

HOW TO SPECIFY:
Weathermatic SmartWire™ Grounding
•
Use #8 bare copper wire
•
Maximum 12 Ohms resistance to earth ground
Test with 3-point Megger or ground resistance clamp-on meter
-
•
Use Exothermic or Cadmium Weld for all ground connections
•
Use grounding enhancement material (GEM) to decrease resistance to ground
Specification Example:
Contractor shall test each grounding grid at completion of project to comply with 12 Ohms or less
electrical requirement. Contractor shall rectify and ground grids that test above this requirement prior to
project completion.
Weathermatic Recommended Grounding Grid Configurations
•
3-rod grid
•
1-rod & 1-plate grid
•
2-plate grid
Grounding – 3-rod grid
•
8-foot ground rod triangle grid
First Rod Connections
#8
bare
copper
wire
SLGDT
Cadweld
SLWIRE
14/12
8' copper
clad
ground rod
10 | P a g e
SLCONN
6" valve
box
Perpendicular to
Two-wire Path
3-Rod Ground Grid Configuration
Cadweld
Minimum 8 feet
wire path
#8 bare
copper wire
SLWIRE14/12