Customers are required to adhere to the 1996 National Electrical Code (NEC) breaker sizing rules. Sections. 210-22(c), 220-3(a), 220-10(b), and 384-16(c) which states a maximum continuous load on a circuit should not exceed 80% of the breaker size. vXchnge requires locking plugs for all sub-floor connections.
Customers are permitted to use the following circuits within the data center: Primary / Redundant and Primary, so long as the total amperage used of the circuit does not exceed 80% of the total breaker size. This includes load-balancing between the Primary circuit and Redundant circuit.
Customers are prohibited from powering equipment in one cabinet from a power source located in an adjacent cabinet. Customers may not “daisy-chain” or connect power distribution units together for the purpose of increasing the number of power outlets or to extend power to installed equipment. If either circumstance is observed, it will require immediate corrective action by the Customer.
Customers may not install or connect uninterruptible power supplies (UPS) or voltage transformers to power circuits installed within the cabinet without vXchnge approval. Both devices can have adverse effects on environmental conditions and power distribution.
Power Overage Usage
Power overage usage is defined as when a single primary circuit or circuit pair exceeds the 80% threshold; this measurement is recorded for when the power on the circuit or between the circuit pair occurs for a sustained 4 hours of usage.
The following use cases explain the vXchnge policies when contracting for power:
Contract for power in a Primary and Redundant fashion with load balancing between the paired circuits:
- Primary and Redundant paired circuits equal to or exceeding 80% of the combined circuits:
- If the total amperage used of the paired circuit(s) exceed 80% of the primary circuit at a given point, vXchnge will notify the customer of the overage within 24 hours of the event. If the action is not corrected within 120 hours of notification; the customer agrees to pay charges for the difference between a primary and redundant circuit at list rates. However, if at any time the problem is not fixed, and vXchnge determines that there is a safety risk, vXchnge reserves the right to shut down the circuit. If the customer remains unresponsive to the requests to resolve the issue, the customer's vXchnge co-location service may be terminated.
- Primary and Redundant paired circuits exceeding 80% on each of the paired circuits:
- If the total amperage used of the combined circuits is at 80% at a given point and/or any individual circuit is over 80% amperage, vXchnge can shut down the circuits. Power will be restored when corrective action is taken. If the customer remains unresponsive to the requests to resolve the issue, the customer's vXchnge co-location service may be terminated.
Contract for power in a Primary fashion or single circuit:
- When contracting for power in a Primary fashion, If the total amperage used of the circuits exceed 80% at a given point, vXchnge will notify the customer of the overage within 24 hours of the event.If the action is not corrected within 120 hours of the notification additional power charges will apply. However, if at any time the problem is not fixed, and vXchnge determines that there is a safety risk, vXchnge reserves the right to shut down the circuit and if the customer is unresponsive to the requests to resolve the issue, the customer's vXchnge co-location service may be terminated.
Options to remedy power over usage:
- Reduce load on the affected power circuit
- Re-balance load to other power circuits allocated to the affected cabinet. Circuits assigned to adjacent cabinets may not be used for this purpose.
- Customers can move their equipment to their adjacent cabinet(s), which may have available power to help distribute the load.
- Buy an additional power circuit or convert a redundant circuit to primary.
If the customer is not in compliance based on the Power Overage Usage Section, and remediation has not been satisfied or corrected, the customer will not be covered by the vXchnge Service Level Agreement for power. Once the customer takes corrective action of remediation the Service Level Agreement for power will be reinstituted for the customer.
Power Overage Billing Measurements
During the course of a contract month, if the total amperage exceeds the vXchnge Compliance threshold noted above, charges will apply. Please note, that power overages are based on four hours of sustained usage on a given primary circuit or between a Primary and Redundant circuit pair. The charges are as follows:
Primary and Redundant Overage:
If a customer is over the 80% threshold on a paired circuit (Primary and Redundant), the charge will be pursuant of the difference between the Primary and Redundant Circuit at list rates.
If a customer is over the 80% threshold on a primary only circuit, the MRC charge will be the difference their current price and the next circuit size up.
Power Cap Overage:
The customer will adhere to the power cap as stated measured by the kW threshold as defined within the Sales Order and overages will be billed at the rate defined in the Sales Order.
Power Overage Credit
If the customer resolves the issues within the specified compliance time frame (dependent on use case stated under the section “Power Overage Usage”), the customer will not be charged an overage fee for the given month.
If the customer resolves the issue after the specified compliance time frame (dependent on use case stated under the section “Power Overage Usage”)) the customer's invoice will be adjusted on the next billing cycle. This excludes the customer purchasing an upgraded circuit.
Customer commits that the maximum continuous load on the identified power circuits will not exceed the contracted draw caps. All operational and billing policies will be enforced against the draw cap thresholds. All other NEC rules and vXchnge requirements still apply.