How to Route Water and Electricity in Mobile Toilets

The routing of water and electricity in mobile toilets should balance practicality and safety, and can refer to the layout principles of conventional bathrooms. The specific plan is as follows:

I. Water Routing

1. Ceiling or Floor Routing Options

   • Ceiling Routing: Facilitates later maintenance, allowing for timely detection and repair of leaks, minimizing impact on adjacent areas, and is particularly suitable for compact spaces or scenarios requiring frequent maintenance.
   • Floor Routing: Utilizes the flushing force to ensure smoother water flow, but requires strict waterproofing to prevent long-term water accumulation and leakage. It is recommended to adopt a "wall-drain" design, hiding the drainage pipes within the walls to reduce the risk of floor trenching.

2. Construction Specifications

   • Pipe Spacing: The spacing between water pipes should be greater than 5 centimeters to prevent heat loss or noise caused by contact between hot and cold water pipes.
   • Trenching and Fixing: Horizontal trenching causes less damage to walls. Water pipes should be fixed using medium clamps at 60-centimeter intervals to ensure stability. Indoor water pipes should be wrapped with insulation to prevent condensation from corroding the pipe walls.
   • Faucet Layout: Install faucets according to functional needs, such as for washing machines, mop sinks, and water heater inlets and outlets. Hot and cold water pipes should be laid side by side with a spacing of about 15 centimeters.

II. Electrical Routing

1. Ceiling Routing Preferred
   Given the high humidity in mobile toilets, electrical routing on the ceiling can prevent moisture-induced electric shocks, with particular attention to the moisture-proofing of lighting fixtures and switches.

2. Safety Protection Measures

   • Equipment Selection: Choose lighting fixtures and switches with a waterproof rating of IP44 or higher, avoiding exposed connectors. Sockets should be equipped with splash-proof covers to prevent water splashes.
   • Power Supply Location: It is recommended to place the switch power supply outside the toilet to reduce the risk of electric shock. If an internal power supply is required, independent wiring should be used to ensure that short circuits in other areas do not affect its use.
   • Smart Device Reservations: If installing a smart toilet, reserve a water inlet (30 centimeters from the ground and 30 centimeters from the toilet) and a socket (30 centimeters from the ground with a splash-proof cover). The pit distance should be selected as 30 or 40 centimeters according to the toilet model.

III. Comprehensive Considerations

1. Waterproofing: Regardless of whether the water pipes are routed on the ceiling or floor, waterproof coating should be applied at the junctions between walls and floors and around pipe roots, with a thickness of not less than 1.5 millimeters, and a 48-hour water closure test should be conducted.
2. Pressure Test: After water pipe construction is completed, a pressure test of 0.8-1 MPa should be conducted for 30 minutes without leakage before acceptance.
3. Materials and Construction: Use PPR water pipes and BV wires, avoiding inferior materials. Water and electricity renovations should be carried out by licensed electricians to ensure compliance with the "Residential Decoration and Renovation Engineering Construction Specifications".

By scientifically planning the routing of water and electricity and strictly adhering to construction standards, the practicality and safety of mobile toilets can be significantly improved, reducing later maintenance costs.