Correcting An Electrical Commercial...Residence?!?

2 years ago
117

Electric Pro Academy - Real skills to make real money.

Synopsis:
Residences in the United States typically have a single-phase 120-240V system for electrical power, but somehow this house was given a hybrid three-phase 120-208V system with some single-phase 120-240V power as well?! Not only did Jefferson identify the anomaly, which was missed by an inspector and an engineer, but they were also tasked with remediating the issue and upgrading the service to 400-amps for this large home with electric vehicle charging needs. Here’s how the pros safely fix a high-power, utility-related situation with efficiency & thoroughness.

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EPro-To-Call Beta:
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Products We’d Recommend:
*EPRO endorses pro-level tools & materials, and receives a small commission for purchases through our links from Amazon & other affiliate programs. We’d be happy to recommend more cost-effective products for DIYers and low-frequency users if you engage with us in the comment section!
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National Electrical Code (NEC) referenced in this video:
Free Access Here: https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=70
[] Overhead Service Drop height [NEC NEC 230.24(B), though local AHJ may adjust]
[] Grounding rod depth [NEC 250.53(A)(4)]
[] 1st means of disconnect [NEC 406.4(D)]
[] Maximum overcurrent device height [NEC 240.24(A)]
[] Support & conduit body between 3' [NEC 352.30 and Table 352.30]
[] Expansion Fittings [NEC 352.30, 352.44 and Table 352.44]
[] 500 kcmil sizing vs. utility code [NEC 310.16, though local AHJ may adjust]
AES Goldbook Free Access Here (Note: AES is the AHJ for Indiana, not nationwide): https://www.aesindiana.com/goldbook-electric-service-and-meter-manual
[] Meter mounting height

Outline:
0:00 - Introduction
2:54 - Disconnecting Utility Power
9:13 - Prepping The New 400-Amp Meter Cabinet
10:29 - Grounding A 400-Amp Service
11:42 - Drilling For The New Meter Cabinet
13:02 - Removing A Bolted Meter
13:37 - Dismantling Interior Electrical Disconnects
14:58 - Dismantling Exterior Electrical Disconnects
17:50 - Measuring For Interior-Exterior Alignment
14:58 - Mounting The New Meter Cabinet
22:20 - Mounting Conduit Fittings
27:57 - Coring Through The Wall
32:41 - Mounting Exterior Conduit
41:04 - Prepping The Meter Cabinet For Wiring
45:10 - Building The Service Riser
52:41 - Running Service Conductors Through Wall
53:24 - Running The Grounding Electrode Conductor
57:25 - Running Service Riser Conductors
1:02:11 - Calling The Utility For Reconnection
1:03:11 - Landing Meter Cabinet Wires
1:08:55 - Calling The Utility For Reconnection Again
1:15:13 - Wrapping Up The Meter Cabinet
1:18:42 - Landing Wire In The Service Panels
1:20:49 - Running Wire Underground To A Sub-Panel
1:22:20 - Final Wrap-Up

Connect With Us:
Electric Pro Academy is a multimedia team dedicated to training and instructing DIYers and professional electricians for the growth and dignity of the craft nationwide.
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Jefferson Electric installs and services residential, commercial, solar, and Tesla systems in Indianapolis, IN.
https://www.jeffersonelectricllc.com/
https://www.facebook.com/JeffersonElectric
https://www.linkedin.com/company/jefferson-electric-llc/

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