Waya wapansi, womwe umadziwikanso kuti waya woteteza mphezi, umatanthawuza waya womwe umagwiritsidwa ntchito kulowetsa mphamvu pansi. Zida zamagetsi zikatuluka, magetsi amalowa pansi kudzera muwaya wapansi, zida zamagetsi zamphamvu kwambiri zimafunikira chisamaliro chapadera.
Ntchito yake ndikulowetsa mwachangu munthaka kudzera muwaya wapansi pomwe zida zanu zamagetsi zikutsika kapena kuyitanitsa ma induction, kuti chipolopolo cha zida zisaperekedwenso, kuonetsetsa chitetezo cha ogwira ntchito ndi zida.