217 lines
5.0 KiB
Markdown
217 lines
5.0 KiB
Markdown
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# SOP: Power Strips and Surge Protection for Edge Compute Center
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## Purpose
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This document defines the standard approach for power strips, surge protection, and power distribution within the Edge Compute Center.
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---
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## Guiding Principle
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Power strips are primarily used for:
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* Outlet expansion
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* Basic surge suppression
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* Equipment organization
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Power strips are **not** the primary layer of electrical protection.
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The primary protection strategy consists of:
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1. Whole-panel surge protection devices (SPD)
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2. Proper grounding and bonding
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3. Dedicated electrical circuits
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4. Inverter/UPS backup power system
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5. Local power strips or PDUs
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---
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## Current Infrastructure
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### Electrical System
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* Main panel replaced approximately 8 years ago.
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* Subpanels replaced approximately 8 years ago.
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* Whole-panel SPD installed.
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* Dedicated circuits installed specifically for the Edge Compute Center.
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* Dedicated circuits originate directly from the subpanel.
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* Grounding tested and verified.
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* Outlet polarity and grounding verified with outlet tester.
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### Backup Power
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* Custom-built UPS system using a high-quality inverter.
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* System provides backup power, voltage continuity, and power conditioning.
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* Solar system includes surge protection devices on PV circuits.
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---
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## Understanding Surge Ratings
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### Joules vs Watts
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Joules and watts measure different things.
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* Joules = energy
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* Watts = power
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A surge protector's joule rating indicates how much transient surge energy it can absorb over its lifetime before protection degrades.
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A higher-wattage device does not automatically require a higher-joule surge protector.
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Example:
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| Device | Power Draw | Need High Surge Protection? |
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| ------------ | ---------- | ------------------------------------- |
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| Laptop | 50W | Usually not critical |
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| Mini PC | 20–50W | Usually not critical |
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| NAS | 50–100W | More important due to data value |
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| Proxmox Host | 100–300W | More important due to downtime impact |
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Protection requirements are primarily driven by:
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* Equipment replacement cost
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* Data value
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* Downtime impact
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Not by power consumption.
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---
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## Approved Power Strip
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### Standard Deployment
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Amazon Basics 6-Outlet Surge Protector
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Specifications:
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* 15A circuit breaker
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* 600-joule surge protection
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* Safety shutters
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* Flame-retardant housing
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This product is acceptable for:
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* Mini PCs
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* Laptop chargers
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* Monitors
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* Phone chargers
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* Small switches
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* Development systems
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* Backup systems
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* Test benches
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---
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## Critical Infrastructure
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### Tier 1 Equipment
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Examples:
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* Proxmox hosts
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* QNAP NAS devices
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* Core router
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* Core network switch
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Requirements:
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* Connected to dedicated circuits.
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* Protected by panel-level SPD.
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* Protected by inverter/UPS.
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* May use higher-quality surge strips or rack PDUs if desired.
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However, given the existing electrical infrastructure, upgrading from a 600J strip to a 2,000–4,000J strip is not expected to materially improve overall protection.
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---
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## Non-Critical Infrastructure
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### Tier 2 Equipment
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Examples:
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* GMKtec mini PCs
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* Static website servers
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* Backup nodes
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* Development machines
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* Workstations
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Requirements:
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* May use Amazon Basics 600J surge strips.
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* No special surge protection requirements beyond existing infrastructure.
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---
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## Protection Layers
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The protection strategy is based on multiple layers:
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1. Utility power
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2. Main electrical panel SPD
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3. Subpanel distribution
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4. Dedicated branch circuits
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5. Inverter/UPS system
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6. Local power strip
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The majority of protection is provided by layers 2–5.
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The power strip is considered the final and least important protection layer.
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---
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## Risk Assessment
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Given the current infrastructure:
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* Whole-panel SPD installed
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* Dedicated circuits
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* Verified grounding
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* Verified outlet wiring
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* High-quality inverter backup system
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* Solar surge protection devices
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The likelihood of equipment damage being prevented solely by increasing power strip surge rating from 600J to 2,000–4,000J is low.
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More likely failure points include:
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* SSD failure
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* Power supply failure
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* Network equipment failure
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* Human error
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* Software corruption
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* Backup failures
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---
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## Purchasing Guidance
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### Buy Standard Amazon Basics Strips For
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* Mini PCs
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* Workstations
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* Laptops
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* Monitors
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* Development equipment
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* Backup systems
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### Prioritize Budget Toward
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* Spare SSDs
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* Spare power supplies
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* Spare networking equipment
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* Additional backups
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* Backup internet
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* Monitoring systems
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These investments are expected to provide greater operational resilience than purchasing premium surge strips.
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---
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## Conclusion
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The current Edge Compute Center electrical design provides a robust multi-layer protection strategy. Standard Amazon Basics 600J surge-protected power strips are approved for general deployment throughout the environment, including mini PCs, workstations, and secondary systems. Existing panel-level surge protection, dedicated circuits, grounding verification, and inverter-based backup power provide the primary layers of protection.
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