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Can a telecom equipment ground be routed through a cable ladder that acts as a metal loop? Does this cause a choke point when lightning hit?

Hi Chanh,

Thank you for your question regarding Telco grounding and metal cable ladders, it is our pleasure to help.

The short answer is “yes”.  You can route Telco grounding conductor in a metal cable ladder (even if it is a metal loop) as long as the ladder itself is grounded.

There are a number of codes that mandate the grounding of the ladder, specifically Motorola’s R56 standard and the ANSI/TIA/EIA-J-STD-607-A.  We commonly see a #2 tinned solid copper conductor routed along all the metal trays and ladders, bonding the various indipendent pieces along the way.  This conductor is in turn bonded back to the main grounding system, often via a copper ground bar.

We recommend you review Motorola’s R56 standard, as it has excellent diagrams detailing the specifics of grounding requirements for Telco sites.  If you should have any more questions, please do not hesitate to contact us again in the future.

Best regards,

Then Engineering Team at E&S Grounding Solutions


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