September 17, 20214 yr Hi All, can some one help me with SANS regulations regarding the installation of a 24000btu A/C. What does the regulation say? does the installation have to be the same as that of a stove for an example? if so, what size of the MCB do I need to install in my DB and what size of the isolator do I need, closer to the A/C? or should I just size them according to the spec of the A/C? can I just use a normal socket outlet next to the A/C to unplug/isolate it if it needs repairs?
September 18, 20214 yr Hi, my knowledge of SANS10142 is a bit dated, but hopefully general common sense and stuff will help. The information given below is from an electrical standpoint and has nothing to do with any type of alternate energy so An aircon that size is going to draw far more power than a 15A socket is designed for so definitely don't go that route unless you like electrical fires. IE: Don't plug it in to a normal household socket! Most home circuits are 64Amp capable on single phase, so legally attaching it to your main Circuit Board is fine as it will trip any over-usage. 1. You can connect this (even under my understanding of the SANS regulations) to your DB, but with a separate 25A MCB 2. There is a legislation in some parts of the country (local municipal laws) that require you to have a disconnect (a basic power on/off switch capable of the 25A switch) within 1m of the device. This is distance is horribly abused, but logically they meant within 1m of the evaporator unit on the outside of the building. Make sure they fit a complete disconnect breaker near the evaporator. 3. The SANS regulation says that this circuit (over 15A) must be unique and not shared with anything else, so this has to be a separate switch on your Distribution Board, don't forget that. 4. Unless you have had major changes to your electrical plan/connections, you don't need a COC to add this by itself. My personal recommendation is that you pay to get one to prevent insurance disputes later. This is up to you to investigate, I can provide you with the advice, but some government/politics are outside my/your control. I know my info is slightly outdated, but the common sense still applies: Just connect the Aircon to a separate 25A Circuit Breaker and you are legally covered as long as the rest of the home installation remains compliant. Since this is
September 18, 20214 yr Author 1 hour ago, KLEVA said: Hi, my knowledge of SANS10142 is a bit dated, but hopefully general common sense and stuff will help. The information given below is from an electrical standpoint and has nothing to do with any type of alternate energy so An aircon that size is going to draw far more power than a 15A socket is designed for so definitely don't go that route unless you like electrical fires. IE: Don't plug it in to a normal household socket! Most home circuits are 64Amp capable on single phase, so legally attaching it to your main Circuit Board is fine as it will trip any over-usage. 1. You can connect this (even under my understanding of the SANS regulations) to your DB, but with a separate 25A MCB 2. There is a legislation in some parts of the country (local municipal laws) that require you to have a disconnect (a basic power on/off switch capable of the 25A switch) within 1m of the device. This is distance is horribly abused, but logically they meant within 1m of the evaporator unit on the outside of the building. Make sure they fit a complete disconnect breaker near the evaporator. 3. The SANS regulation says that this circuit (over 15A) must be unique and not shared with anything else, so this has to be a separate switch on your Distribution Board, don't forget that. 4. Unless you have had major changes to your electrical plan/connections, you don't need a COC to add this by itself. My personal recommendation is that you pay to get one to prevent insurance disputes later. This is up to you to investigate, I can provide you with the advice, but some government/politics are outside my/your control. I know my info is slightly outdated, but the common sense still applies: Just connect the Aircon to a separate 25A Circuit Breaker and you are legally covered as long as the rest of the home installation remains compliant. Since this is Thank you for the detailed explanation, much appreciated. Planning to DIY the installation, I was quoted R3500 just for the wiring from the DB to the A/C.. lol!
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