Panel upgrade with grounding system replacement single line diagram
New panel with rods, water bond and intersystem bonding. Use this when a panel change also replaces the grounding: new ground rods, a bond to the water piping and intersystem bonding.
A free template with typical ratings, conductor callouts and general notes. Open it, change what differs on your job, fill in the title block and export a PDF.
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What the reviewer checks on this drawing
The reviewer looks for the main bonding jumper in the main panel only, grounding electrode conductors that are continuous or irreversibly spliced, and a bonding jumper around the water meter.
What the drawing shows
Every device on the sheet, in the order power reaches it.
| Symbol | Label | Rating or detail | Conductors feeding it |
|---|---|---|---|
| Utility source | Utility service | 120/240V 1φ 3W | |
| Meter | Utility meter | 200A socket | Service conductors, per utility |
| Circuit breaker | 200A 2P | Main breaker | |
| Panel | New main panel | 200A bus · 120/240V | |
| Ground | Ground rods | 2 rods, 6 ft apart, #6 Cu GEC | |
| Ground | Water pipe electrode | #4 Cu GEC within 5 ft of entry | |
| Ground | Gas pipe bond | By equipment grounding conductor | |
| Device | Intersystem bonding (IBT) | #6 Cu | |
| Circuit breaker | Existing | Branch breakers | |
| Load | Existing loads |
Notes on the sheet
- Main bonding jumper installed in the main panel only.
- Grounding electrode conductors continuous or irreversibly spliced.
- Bonding jumper installed around the water meter and any insulating fittings.
Diagram is schematic and not to scale. Field-verify existing equipment ratings. Ratings and conductor sizes shown are typical. Confirm against the adopted code, the equipment listing and a load calculation before installation. Code references are to the 2023 NEC and the 2024 Canadian Electrical Code: see references and editions.
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