1. Tsis txhob siv lub 'meter' qhov chaw uas muaj cov khoom tawg yooj yim thiab tawg;
2. Ua ntej tig lub hwj chim, xyuas kom meej tias cov av tiv thaiv tester muaj kev ntseeg siab hauv av;
3. Ua ntej qhov kev xeem, nws yuav tsum tau muab sau tseg tias cov khoom xeem thiab cov ntsuas clamp yuav tsum nyob rau hauv kev sib cuag zoo, txwv tsis pub cov ntaub ntawv ntsuas yuav tsis raug lossis cov ntsuas ntsuas yuav cia li nres qhov kev xeem yog tias tam sim no faulty;
4. Cov clip xeem tau zoo elasticity, txwv tsis pub nws yuav ua rau kev ntsuas yuam kev;
5. Yog tias qhov ntsuas tam sim no ntau dua 29A, tus neeg kuaj xyuas pom tias tam sim no faulty, ceeb toom thiab cia li nres qhov ntsuas;
6. Txhawm rau kom ntseeg tau qhov tseeb ntawm qhov kev xeem, lub sijhawm ntsuas ntawm txhua qhov kev ntsuas hauv av yuav tsum tsis pub tsawg tshaj 3 vib nas this, thiab kev nyeem ntawv yuav tsum tau ua tom qab cov ntaub ntawv ruaj khov;
7. Koj yuav tsum tau nyeem phau ntawv qhia ua ntej koj ua haujlwm, thiab sab laj nrog ib tus kws tshaj lij yog tias koj muaj cov ntsiab lus tsis meej;
8. Yog hais tias lub grounding resistance tester ua tsis tiav, thov sab laj nrog cov kws tshaj lij, thiab tsis txhob qhib rooj plaub ntawm qhov xav tau;
9. Nws yuav tsum tau sov so rau 10 feeb txhua zaus nws qhib, txwv tsis pub nws qhov tseeb tsis tuaj yeem lav.