Hi Guys
I have a question regarding volt drop.
Some time ago a company I worked for installed wall mounted aircon units around their workshop. They wired them into an existing 2.5mm ring main circuit which was in singles in a truncking. During operation some of the units would cause the protection to trip (MCB's). The reason given for this was that the cable runs were too long causing exessive volt drop and thus more current being drawn from the cct. My question is this: Long able runs will cause exessive volt drops due to the extra resistance of the said long cable runs. If the long cables increase the resistance surely the current delivery capability will be reduced! so how can the aircon units draw more current with this added resistance. Or am I missing something.
I have a question regarding volt drop.
Some time ago a company I worked for installed wall mounted aircon units around their workshop. They wired them into an existing 2.5mm ring main circuit which was in singles in a truncking. During operation some of the units would cause the protection to trip (MCB's). The reason given for this was that the cable runs were too long causing exessive volt drop and thus more current being drawn from the cct. My question is this: Long able runs will cause exessive volt drops due to the extra resistance of the said long cable runs. If the long cables increase the resistance surely the current delivery capability will be reduced! so how can the aircon units draw more current with this added resistance. Or am I missing something.