Magetsi nesolar
House wiring and circuit planner
This planner turns a list of what is in the house into a list of circuits, using standard domestic practice: how many lights and plugs share a circuit, which appliances need a circuit of their own, the breaker and cable size for each, and how big the distribution board (DB board) needs to be.
Zvaunoda
Calculator iyi inoverenga nhamba mubrowser yako, izvo zvinoda kuti JavaScript ivhurwe. Nzira iri pazasi inoratidza kuti ungazviverenga sei nemaoko.
Fungidziro dzekuronga nekuita bhajeti. Huwandu chaihwo hunoenderana nenzvimbo nebasa, saka bvunza muvaki wako usati waodha.
The rules are the common ones under SANS 10142-1, which Zimbabwean electricians widely work to: lighting on 10 A breakers with 1.5 mm² cable, plugs on 20 A breakers with 2.5 mm², a dedicated circuit for each geyser, stove, aircon and pump, earth leakage protection (30 mA) on every socket circuit, and spare ways for the future.
It is a planning tool for drawings and budgets. The final design, installation and Certificate of Compliance must come from a licensed electrician, and ZESA will not connect without it.
Mashandiro ayo
- Lighting circuits = light points ÷ lights per circuit, rounded up, each 10 A on 1.5 mm².
- Plug circuits = plug points ÷ points per circuit, rounded up, each 20 A on 2.5 mm², all behind 30 mA earth leakage.
- Each geyser, aircon and other dedicated load gets its own circuit; the stove its own 32 A or 40 A circuit on 6 mm² or 10 mm².
- Board ways = single-pole breakers + 2 for the main switch + 2 per earth leakage unit, plus about 25% spare, rounded up to a standard board size.
Zvainofungidzira
- Single-phase supply.
- Pump circuit sized at about 1.25 × its running current.
- Surge protection is recommended and allowed for in the board ways.
Mibvunzo inowanzobvunzwa
How many plugs can go on one circuit?
Common practice is up to about 10 socket outlets on a 20 A circuit in 2.5 mm² cable, protected by 30 mA earth leakage.
Does a geyser need its own circuit?
Yes. Each geyser should have a dedicated circuit, typically 20 A on 2.5 mm², with an isolator near the geyser.
How many ways should my DB board have?
Enough for every breaker, the main switch and earth leakage units, plus roughly a quarter spare for additions such as solar, a gate motor or an outbuilding.
Unoda huwandu chaihwo hwepurani yako?
Calculator inoshanda nemadziro rimwe kana slab imwe panguva. Bill of quantities inoshanda nemadhirowingi ako chaiwo uye inoverenga zvese, ndizvo zvinoshandiswa nevavaki kuisa mitengo uye zvinokutadzisa kutenga kaviri.