Presented by: Dan McMenamin

President Dan McMenamin and Associates, Inc.

Engineering Grounds for Bonding Grounds: Techniques solidly grounded in science (and experience).

PEG 2017 Dallas, Texas March 14-16, 2017

Difference in Potential

Induction If gate is unbonded, it ‘looks’ like a switch.

Bonding

Substations

WTF?

Why The Fire?

Warning: Graphic injury image ahead

Ouch!

Courtesy: Pentair Inc.

Backflash

NFPA 70

Intersystem Bonding Termination(s)

Residential

Telco C.O.

Dangerous: Unbonded ground systems

Water Main

OPGP Bus

C.O. Grd Bars

Summary • Bonding and grounding are all about safety

and equipment health & performance.

• Avoid confusion: always consult the latest relevant documentation.