RTG Wiring Harness
RTG Power and Instrumentation Cabling
The RTG power and instrumentation cabling harness routes approximately 500 We of electrical output and health monitoring signals from the radioisotope thermoelectric generator to power conditioning and telemetry systems. Constructed from silver-plated copper conductors with radiation-resistant PTFE insulation and stainless steel overbraid, the assembly must bridge a severe thermal gradient between the roughly 200 °C generator housing and the ambient interior. Cable materials and redundant routing paths are engineered to minimize ohmic losses and withstand continuous ionizing radiation from the adjacent plutonium-238 heat source across a 100-year operational life.
Power and signal cables connecting RTG output to power conditioning and telemetry systems
Purpose
Route RTG electrical output and health monitoring signals to Ark power and data systems
Context
Child of L2-PWR-RTG within the Lunar Ark power generation system
Principles
- ▸Low-resistance power cables minimize ohmic losses from RTG ~500We output
- ▸Radiation-resistant insulation required near Pu-238 source
- ▸Temperature-rated cables span from RTG housing (~200C) to ambient Ark interior
- ▸Redundant cable paths ensure power delivery even with single cable failure
Typical implementations
- ▸Aerospace-grade MIL-SPEC cabling (M22759 series)
- ▸Radiation-resistant ETFE/PTFE insulation systems
- ▸TE Connectivity space-rated circular connectors
Lunar considerations
- ▸Radiation damage to insulation from nearby RTG Pu-238 source
- ▸Thermal gradient along cable run from hot RTG to cooler Ark interior
- ▸100-year insulation life requires radiation-resistant polymer selection
Specifications
Functional
| primary function | Power and signal cables connecting RTG output to power conditioning and telemetry systems |
Physical
| materials | PTFE insulation, Silver-plated copper conductors, Stainless steel overbraid |
Interfaces
Provides
- RTG DC electrical output connection
Requires
- Thermoelectric converter output terminals
Cite this entry
Lunar Ark Codex. "RTG Wiring Harness" (L3-PWR-RTG-HARN). Retrieved 10 September 2026, from https://lunarark.com/entry/L3-PWR-RTG-HARN
Licensed CC-BY-SA 4.0. You may reuse and adapt this entry with attribution, under the same licence.