cell: 503-490-9471 | office: 503-775-0880 | email: jack@cornerstone-electric.com

CornerStone Electric has the best Electricians in Portland - Residential and Commercial!

CornerStone Electric is a Portland Electrician who is available for 24 Hr. emergency response day or night: 503-490-9471!


Full List Of Services

Upgrade a 2 Prong Outlet With a New GFI

Monday, November 23rd, 2009

This tutorial will walk you through how to improve the electrical safety in your home by easily replacing a 2 prong outlet with a new safe GFI. This safety upgrade should especially be done if the existing 2 prong outlet is near a sink, vanity or tub.

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How does a GFCI Work?

Monday, October 26th, 2009
Full List Of Services

Ground-Fault Circuit Interrupter (GFCI)

Tuesday, September 29th, 2009
Full List Of Services

Is a Building Frame a Grounding Electrode?

Monday, August 31st, 2009