Quick Hits

Episode 4: Electrode Connections & Mobile Home Grounding (750.100(B) – 750.106)

SLIDE 1 (HOOK / COVER) ⚡ NEC Quick Hit: Intersystem Bonding & Mobile Homes (Part 4) ⚡ 

Where do you tie your low-voltage grounding electrode conductor? Can you drive a separate ground rod for cable TV? Let's finish Article 750! 👇

SLIDE 2 (THE GROUNDING HIERARCHY) Where to Connect Your Bonding Conductor:

• 1. Intersystem Bonding Termination (IBT): Always connect to the building's IBT device at the electrical service if available (Section 250.94).

• 2. Accessible Grounding Means: If no IBT exists, connect to the nearest accessible power service enclosure, service raceway, GEC, or interior water pipe within 5 feet of the entrance.

• 3. Separate Electrodes & Bonding: If separate electrodes are used, they must be bonded together with a minimum 6 AWG copper jumper to prevent potential differences!

SLIDE 3 (MOBILE HOME GROUNDING RULES) Mobile Home Requirements:

• If service equipment or a disconnecting means is located within 9.0 m (30 ft) of the mobile home exterior wall, low-voltage shields, primary protectors, and NIUs must tie back to that grounding electrode system.

SLIDE 4 (WRAP-UP) 💡 Apprentice Pro-Tip: 

Never drive an isolated ground rod for a CATV or satellite dish without bonding it back to the main electrical service grounding electrode. Creating multiple unbonded grounding systems destroys tuner boards and creates severe shock hazards!

💬 Save this post for your final code review on limited-energy grounding and bonding! 🔗 

More code breakdowns and study tools at www.JoshTheSparky.com

← View Chapter 7 Home

← Back To Article 726 Home

← Back To Quick Hits Home