What's Wrong Here?

Jul 2, 2009 6:51 PM, By Joe Tedesco, NEC Columnist

Hint: Zone infraction

Section 110.26(F)(1)(a), which covers the topic of dedicated electrical installation space, requires you to maintain a clear space around electrical equipment equal to the width and depth of the equipment. This clear space must also extend vertically from the floor to a height of 6 ft above the equipment, or to the structural ceiling, whichever is lower. You may not install piping, ducts, leak protection apparatus, or other equipment foreign to the electrical installation in this zone.

In addition, Sec. 250.68(B) requires you to effectively bond around insulated joints, and around any equipment likely to be disconnected for repairs or replacement. Without being too tight, this bonding jumper — missing in this installation — is supposed to be of sufficient length to permit removal of any equipment while maintaining the integrity of the bond.

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