Taiwan Water Meter Installation

---
type: Skill
name: taiwan-water-meter-installation
description: "This skill should be used when planning, designing, or reviewing the water meter installation locations, types, and configurations for buildings in Taiwan according to the Taiwan Water Corporation guidelines. Trigger words: 水表/水錶位置與安裝、水表箱、台灣自來水公司規定。"
metadata:
  class: C
---

# Taiwan Water Meter Installation Principles

## Context & Purpose
This skill defines the operational parameters and constraints for installing water meters (總表, 分表, 獨立表) in Taiwan, as regulated by the Taiwan Water Corporation (台灣自來水股份有限公司用戶表位設置原則).

## Parameters & Classification
| Meter Type | Size (Diameter) | Description |
|------------|-----------------|-------------|
| Large Meter (大表) | ≧ 50 mm | - |
| Small Meter (小表) | ≦ 40 mm | - |
| Master Meter (總表) | - | Meter followed by other meters for individual billing. |
| Sub Meter (分表) | - | Meter following a master meter. |
| Independent Meter (獨立表) | - | Directly supplies user, no subsequent billing meters. |
| Smart Meter (智慧表) | - | Part of AMR system, transmits signals to TWC. |

## Location Rules
- **General Safety**: Must be in safe spaces allowing easy meter reading, replacement, maintenance, and good drainage.
- **Prohibited Areas**: Inside toilets, bathrooms, underground basements (for master/independent meters), or back of the house. Must not obstruct traffic/pedestrians.
- **Master/Independent Meters**:
  - Should be placed within the property line, adjacent to the road building line.
  - Allowed on open spaces behind arcades, flower beds, green areas, or beside stairways.
  - Prohibited in driveways or parking spaces.
- **Sub Meters (Apartments/Condos)**:
  - Default location is the **roof** (must have a fixed stairway and railing).
  - If roof access is impossible, meters can be grouped in a dedicated **Meter Room** on specific floors (NOT in the basement). The room needs a 4-inch floor drain and a 35cm threshold.

## Clearances & Dimensions
- **Vertical Clearance**: Meter bottom must be ≧ 2 cm above the ground.
- **Recessed Spaces (崁入式表位)**:
  - Axis to roof/gas meter clearance: ≧ 30 cm
  - Axis to wall clearance: ≧ 10 cm
  - For ≦25mm meters: Space ≧ 50(W) x 55(H) x 20(D) cm
  - For 40mm meters: Space ≧ 70(W) x 65(H) x 22(D) cm

## Execution Logic for AI
When checking MEP plans:
1. Verify meter location against prohibited areas (basement, toilets, driveways).
2. Check if sub-meters are placed on the roof. If not, verify the existence of a valid meter room.
3. Validate clear dimensions for recessed meters.