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Garage sub panel

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R

Reddiesel

New User
Location
Pennsylvania
Occupation
Electrical contractor
Are you required to have a ground rod installed on a garage sub panel
The garage is detached from house
House has 200 amp panel and wire running to garage is is 4 wire leaving house underground to garage 100 amp panel separating grounds and neutrals
 
infinity

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
Yes a GES is required at a separate structure when you have a panel there. You would need two rods for the GES or a single rod tested to be 25 ohms or less.

Welcome to the Forum.
 
tom baker

tom baker

First Chief Moderator & NEC Expert
Staff member
Location
Bremerton, Washington
Occupation
Master Electrician
A grounding electrode system is required. That can be any acceptable electrode, a water pipe is supplemented with another electrode, but is most commonly a ground rod, or two
 
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