[RE-wrenches] Bare copper in EMT?

[August Goers]

Wrenches,

As a follow up to my last post on multiple subarray wiring methods I'd like to hear opinions on running bare copper ground wires inside EMT.

The following Galvanic explanation and chart would seem to indicate that it is not acceptable which is always what I've been taught:

http://www.engineersedge.com/galvanic_capatability.htm

However, I inspect PV installations on a regular basis and commonly see bare copper in EMT with no significant signs of corrosion. Maybe they're not old enough?

Thanks,

August


August Goers

Luminalt Energy Corporation
O: 415.564.7652
M: 415.559.1525
F: 650.244.9167
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