480Y/277V Meter Main NEMA 1/3R
- 480Y/277V for industrial power systems
- NEMA 1 indoor & 3R outdoor enclosures
- All seismic zone compliant: UBC & IBC
UL 891 Certified
EUSERC Approved
Approved Siemens OEM
800 Amp Meter Base products from DEI Power include UL-listed, EUSERC-approved Siemens-built meter main assemblies available in NEMA 1 and NEMA 3R enclosures across multiple voltage configurations. Designed for commercial, industrial, and utility applications, these units offer heavy-duty construction, seismic compliance, and service-friendly layouts for reliable high-capacity power distribution.
Talk to our product experts for custom solutions.
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For an 800-amp service, the NEC (National Electrical Code) Table 250.66 typically requires a minimum 1/0 AWG copper or 3/0 AWG aluminum grounding electrode conductor. However, the equipment grounding conductor size is determined by Table 250.122 based on the overcurrent device rating. Always consult a licensed electrician and your local AHJ for project-specific requirements.
Talk to our experts for custom solutions and tailored guidance.
800 Amp Meter Mains provide reliable metering and main disconnect for large commercial buildings and campuses.
Heavy-duty meter main assemblies support high-demand power distribution in manufacturing plants and industrial facilities.
EUSERC-approved meter mains meet utility specifications for substations and critical infrastructure power distribution systems.
High-capacity meter main units deliver dependable, code-compliant power entry for enterprise and colocation data center facilities.
Talk to our experts for custom solutions and tailored guidance.
As an approved Siemens OEM, DEI Power delivers precision-engineered meter main assemblies using genuine Siemens components, ensuring code-compliant performance and long-term reliability on every project.
Operating from a 50,000 sq. ft. facility in Ontario, CA, DEI Power ships most orders within 1 business day, reducing schedule risk and keeping your project on track.
All meter main assemblies are UL 891 certified and meet UBC, CBC, and IBC seismic zone requirements, simplifying code compliance for commercial, industrial, and utility installations.
Submit your project specs and a DEI Power specialist will respond with pricing, configuration guidance, and lead time details.
For immediate assistance, feel free to give us a direct call at (866) 773-8050. You can also send us a quick email at sales@deipower.com.
For immediate assistance, feel free to give us a direct call at (866) 773-8050. You can also send us a quick email at sales@deipower.com.
