the only problem with that is , you may check a ressistance and find it to be ok when the systems it runs have no load, ressitance checks cannot be carried out when components are connectecd unless direct and specific values are known, so you may have a ( for instance) 1.0mmcsa cabe thats frayed to fook , only 2 strands left , check it disconnected and with a mm, you will see a circuit , and 9 times out of ten ressistance will be low enough for you to say its ok , now send 4 amps down it ( if it doesnt become a fuse ) then PTC will affect it to then give you a very high ressistance !!


you have to be very careful and know what your doing with electrics