Greetings to all InterNACHI members!
We have new electrical walls at the InterNACHI® House of Horrors® in Boulder, Colorado. The walls are used during our Chapter meetings, presentations, self-guided tours, and inspection experiences. Come on by and check out the House of Horrors® and the electrical walls at InterNACHI’s Headquarters.
Correct installations and electrolysis are visible at these walls, including:
Overhead and underground service feeders
- 100-amp main breaker circuit breaker panel with breakers (inspectors can view and operate breakers)
- Single pole 15 amp circuit breakers
- Single pole 20 amp circuit breakers
- AFCI circuit breakers
- GFCI circuit breakers
- Combo GFCI/AFCI circuit breakers
- 120-volt electrical devices (this wall is energized so students can inspect, test and operate devices)
- GFCI receptacles
- Smoke detectors
- Carbon monoxide detectors
- Weather proof receptacles
- Switching: single-pole, 3-way, 4-way, dimmer, occupancy sensor
- 240-volt electrical devices
- Electric range receptacle
- Electric dryer receptacle
- A/C disconnect
- Grounding and bonding
- Ground rod grounding
- Water main grounding
- Ufer grounding
- Solar PV grid connected system (students can view an actual PV system on site)
- Series connected PV solar panels
- Code required disconnecting means for DC and AC voltage, including electric utility requirements
- PV solar inverter
At the electrolysis wall, inspectors can view the root cause of electrolysis and where to look for the defects. Electrolysis is related to the grounding system and can create issues that an inspector may discover in the plumbing system and on basement window wells.
If you have any feedback or questions, please post them on this forum thread.
Electrical walls were built by Ray Kline, InterNACHI CPI®, CMI® and Colorado-licensed Master Electrician.