13/09/2025
NIMEONA WATU WANAKARIRI SANA
Nimeona watu WANAKARIRI SANA bila kuelewa na kutoa maelezo kuwa Circuit breaker ilitakiwa ianze kabla ya Main switch
Naomba nitoe elimu kidogo
Mpangilio wa kawaida (Single Phase nyumbani) utantakiwa kuwa hivi👇👇
MITA (L, N, E) → Main Switch → MCCB → MCBs → Loads (Lights & Sockets)
Main Switch, inakuwa kabla ya MCCB,(Circuit breaker)kwa sababu
1. Inatoa ON/OFF control ya umeme mzima wa nyumba
2. Inaruhusu mtu kuzima power nyumbani kwa dharura, kabla ya kuingiza MCCB/MCB
3. Husaidia wakati wa maintenance
MCCB (Circuit Breaker / Molded Case Circuit Breaker) inafuata nyuma ya Main Switch
Inalinda main incoming line dhidi ya overload na short circuit
Hapa MCCB ni protection device, Main Switch ni control device
MCBs (Miniature Circuit Breakers)zinafuata MCCB
Kila MCB inalinda branch circuit moja (lighting, sockets, appliances)
Muhimu kuelewa ni kazi za hizi device
Main Switch Control (ON/OFF) Kwanza kutoka supply
MCCB / Main Circuit Breaker Protection
(Overload/Short) Baada ya Main Switch
MCBs Branch protection Baada ya M
By ENG. SAVO ELECTRICAL SERVICE