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Description
Hydel EK400RO 200A Combination Meter Socket with Isolated Neutral Capability, 4 Jaw, Oversize Enclosure
The Hydel EK400RO is a 200 amp, 600 volt, 4-jaw combination overhead/underground meter socket designed for utility-facing residential and light commercial service installations. This model features an oversize enclosure, barrel-type line connectors angled at 45°, and a No. 6–250 MCM CU/AL conductor range. For Ontario applications where isolated neutral configuration is preferred, the EK series supports the Hydel INK200 insulated neutral accessory.
⚠️ Isolated Neutral Preference in Ontario
On Ontario jobs, utilities often prefer the neutral to be isolated from the meter-mounting device on applicable models. The Hydel EK series lists the INK200 insulated neutral as a field-adaptable accessory, which makes the EK400RO relevant where isolated neutral configuration may be required by the service design, utility guide, or inspector.
- Hydro One gives preference to isolating the neutral from the meter-mounting device on applicable models.
- The EK series includes INK200 insulated neutral as a field-adaptable accessory.
- Final approval depends on the exact SKU, installed configuration, utility requirements, and inspection method.
For Ontario applications where isolated neutral configuration is preferred, the Hydel EK series supports the INK200 insulated neutral accessory. Hydro One guidance gives preference to isolating the neutral from the meter-mounting device on applicable models, while ESA guidance requires the neutral assembly and bonding method to match the grounding approach used on the installation. Final configuration should always be confirmed against the current utility guide and inspection requirements.
🔌 Combination OH / UG Design
Designed for combination overhead and underground service entry applications, making it suitable for a wider range of field conditions than a single-entry-only base.
🧰 Hydel INK200 Capability
The EK series supports the INK200 insulated neutral accessory, helping contractors configure the meter base appropriately where isolated neutral treatment is preferred or required.
📐 Oversize Enclosure
Built with an oversize enclosure and barrel-type connectors angled at 45°, making it a practical choice for service-entry installations requiring extra working space.
Hydel EK400RO Meter Socket Overview
The Hydel EK400RO is a 200A combination overhead/underground meter socket for service entrance applications where a 4-jaw, 600V, single-position meter base with an oversize enclosure is required. It is especially relevant for Ontario contractors looking for a Hydel combination meter base that can support isolated-neutral configuration through the INK200 insulated neutral accessory.
Common buying phrases for this unit include Hydel EK400RO, 200A combination meter socket, overhead underground meter base, Hydel 4 jaw meter socket, Ontario 200A meter base, and isolated neutral capable meter base.
- Ideal for projects requiring combination overhead / underground entry
- Useful where an oversize enclosure is preferred
- Supports isolated-neutral-capable configuration through Hydel INK200
- Suitable for electricians, builders, and electrical wholesalers in Ontario
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Hydel |
| Model | EK400RO |
| Type | Combination overhead / underground meter socket |
| Amperage Rating | 200A |
| Voltage Rating | 600V |
| Jaw Configuration | 4 Jaw |
| Connection Type | Barrel-type connectors angled at 45° |
| Conductor Range | No. 6 – 250 MCM CU/AL |
| Enclosure | CSA enclosure 3R |
| Dimensions | 18" H x 12" W x 4-3/4" D |
| Weight | 15 lbs |
| Accessory Option | INK200 insulated neutral (field adaptable) |
| Application | Combination OH / UG service entrance |
Typical Applications
- Residential service entrances
- Combination OH / UG service configurations
- Utility-facing meter installations
- Ontario contractor supply and replacement jobs
Why Contractors Choose This Model
- Hydel brand familiarity in Ontario
- Combination service entry flexibility
- Oversize enclosure format
- Supports insulated-neutral configuration with INK200
Hydel EK400RO vs Hydel EK400ROBC
These two Hydel EK-family models are closely related, but they are not identical. The main practical difference is that the EK400ROBC is specifically listed by Hydro One as an acceptable-example 200A overhead/underground model, while the Hydel catalogue shows the EK400ROBC with a 3" knockout in the bottom and deeper enclosure dimensions than the standard EK400RO.
| Feature | EK400RO | EK400ROBC |
|---|---|---|
| Amperage | 200A | 200A |
| Voltage | 600V | 600V |
| Type | Combination OH / UG | Combination OH / UG |
| Jaw Configuration | 4 Jaw | 4 Jaw |
| Depth | 4-3/4" | 5-1/8" |
| Bottom KO Note | Standard EK400RO format | c/w 3" KO in bottom |
| Hydro One Acceptable-Example Listing | Verify exact project suitability | Listed by Hydro One |
Downloads & Resources
Use the resources below to review Hydel product-family references, utility acceptance guidance, and related meter-base options.
What the Hydel catalogue confirms
- 200A, 600V, 4-jaw EK400RO configuration
- Oversize enclosure dimensions and weight
- Barrel-type connectors angled at 45°
- INK200 insulated neutral as a field-adaptable accessory
What Hydro One confirms
- Preference for isolating the neutral on applicable models
- EK400ROBC listed as an acceptable-example 200A OH/UG model
- Unlisted models may still be installed if they meet Hydro One requirements
- Final acceptance depends on exact model and installation details
Frequently Asked Questions
What is the Hydel EK400RO used for?
Does the EK400RO support isolated neutral?
Is the EK400RO an overhead or underground meter base?
What conductor range does the EK400RO support?
Is EK400RO approved for Ontario?
Contractor Pricing for Meter Bases & Service Entrance Products
Working on a residential, utility-facing, or electrical service project in Ontario? Contact MarsLED for contractor pricing, sourcing support, and meter-base supply across Ontario and Canada.
For Ontario underground service installations requiring isolated neutral configurations, see the Hydel MSC400TW meter socket or the Hydel MSC400TW3.
Explore More Electrical Service Products
- Browse all electric meter bases
- View Hydel MSC400TW isolated-neutral meter socket
- View Hydel MSC400TW3 isolated-neutral meter socket
MarsLED supplies meter bases and service entrance products to electricians and contractors across Toronto, Mississauga, Brampton, Vaughan, Hamilton, Milton, Kitchener-Waterloo, Cambridge, London, Ottawa, Barrie, Kingston and across Ontario.
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