RCDD · Question #121
As a guide, the MAXIMUM recommended DC current value on any bonded conductor should be less than:
The correct answer is B. 500 milliamps. The maximum recommended DC current on any bonded conductor is less than 500 milliamps to prevent electrolytic corrosion and damage to bonding infrastructure.
Question
As a guide, the MAXIMUM recommended DC current value on any bonded conductor should be less than:
Options
- A250 milliamps
- B500 milliamps
- C750 milliamps
- D1 amp
- E1.25 amps
How the community answered
(18 responses)- A6% (1)
- B72% (13)
- C17% (3)
- D6% (1)
Why each option
The maximum recommended DC current on any bonded conductor is less than 500 milliamps to prevent electrolytic corrosion and damage to bonding infrastructure.
250 milliamps is too conservative and does not match the recognized industry guideline for maximum DC current on bonded conductors.
500 milliamps is the industry-accepted maximum DC current threshold for bonded conductors in telecommunications and electrical grounding systems. Exceeding this level risks electrolytic corrosion at bonding connections, which degrades the integrity of the ground system over time and can create hazardous conditions.
750 milliamps exceeds the recommended safe threshold and would increase the risk of electrolytic corrosion at bonding points.
1 amp is significantly above the recommended maximum and could cause accelerated corrosion and bonding system degradation.
1.25 amps far exceeds the safe recommended limit and poses a serious risk to bonded conductor integrity.
Concept tested: Maximum DC current on bonded conductors
Source: https://www.tdaindustries.com/sites/default/files/2019-05/Grounding%20and%20Bonding%20of%20Telecommunications%20Equipment.pdf
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