BICSI
RCDD-001 · Question #10
You have discovered a common mode current on the metallic cable sheaths of your building riser cables. What is the MOST likely cause for you to investigate?
The correct answer is B. Two separate and distinct ground references. See the full explanation below for the reasoning.
Question
You have discovered a common mode current on the metallic cable sheaths of your building riser cables. What is the MOST likely cause for you to investigate?
Options
- ALack of cable protection
- BTwo separate and distinct ground references
- CImproper secondary protection
- DImproper physical protection of cable
- EImproper placement and/or termination of cables
How the community answered
(58 responses)- A3% (2)
- B78% (45)
- C2% (1)
- D12% (7)
- E5% (3)
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