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| Is this Wiring Legal? (NSW) |
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| Monkeh:
--- Quote from: Labrat101 on December 06, 2020, 04:08:27 pm --- --- Quote from: bdunham7 on December 06, 2020, 03:05:15 pm --- --- Quote from: Labrat101 on December 06, 2020, 02:39:59 pm ---Where as Dave's compress is a rotary vein and is not an inverter model . --- End quote --- It is an inverter model. I won't claim all split-systems are, but every one I've seen new in the last decade or so has been. https://www.airconditionerland.com.au/products/mitsubishi-heavy-industry-avanti-c3-5kw-h3-7kw-reverse-cycle-split-system#feature --- End quote --- That link is also showing its Not an inverter the AC's further down are the Panasonic . I also checked The Mitsubishi service manual on this Model Number its a Rotary Vein as I said . Look at the Plate .below of Dave's Unit . He has the top Number which is non inverter . The VHI is the inverter Model . Dave plate shows this SRK35ZSA-W . 51 years in Service building & HVAC I think I know how to read an AC serial Plate . Thank you. --- End quote --- The link given states "Inverter Split System", and nowhere does it say "not an inverter".. The SRK is the indoor unit, the SRC is the outdoor. The FDTC35VH1 mentioned on the outdoor unit is a ceiling cassette indoor unit, and has nothing to do with the compressor drive. I may not be an HVAC tech, but I can read that much. Perhaps you could provide the technical manual for the SRC35ZSA-W to properly disprove the marketing - the SRC35ZS-W1 I have, and is definitely an inverter drive.. --- Quote from: Labrat101 on December 06, 2020, 04:18:14 pm --- --- Quote from: themadhippy on December 06, 2020, 03:18:51 pm --- --- Quote --- You should have a seperate Fuse rated @ 7 x the normal operating current --- End quote --- which would also require the cable to be uprated,under the uk regs that would require a motor circuit pulling 5A needing to be protected at 35A,and instead of 1mm cable more like 4 or 6mm,a substantial increase in material costs.much simpler to use a slower fuse type designed for motor circuits. --- End quote --- For the UK you require 2.5mm cable For a standard AC the cable rating is for Max Load Amps The Surge current at Start is only for 1 second . So on a UK Ring mains which is 2.5mm in a loop will be equal to 4mm assuming middle of loop (ring) Small AC could be plugged direct to socket as UK plugs have internal fuse .13A . --- End quote --- The cable rating must meet or exceed the continuous capacity of the protective device. A ring final is also certainly not equal to 4mm² - not only is the copper effectively 5mm², the surface area is also significantly greater than a single 6mm².. |
| bdunham7:
--- Quote from: Labrat101 on December 06, 2020, 04:08:27 pm ---51 years in Service building & HVAC I think I know how to read an AC serial Plate . Thank you. --- End quote --- I don't know what to say to that. You might want to take a second look. Mitsubishi Heavy Industries Avanti C3.5kW H3.7kW Reverse Cycle Inverter Split System SRK35ZSA-W-Set Also, when the FLA and LRA are the same, that's a dead giveaway that it is an inverter system. I don't know what rotary vane has to do with it--that's the compressor head, not the motor type. |
| themadhippy:
--- Quote ---For the UK you require 2.5mm cable For a standard AC the cable rating is for Max Load Amps The Surge current at Start is only for 1 second . --- End quote --- no its not,the cable size is determined by the size of the protective device protecting it,the size of the protective device is determined by design current,or in regs speak Iz=>In=>Ib were Ib = Design current In = Nominal current rating of the protection device Iz = current rating of cable for a 5A motor circuit protected by a 6A BS88 device the cable only needs to handle 6A,well within the capacity of 1mm |
| Labrat101:
--- Quote from: themadhippy on December 06, 2020, 04:55:15 pm --- --- Quote ---For the UK you require 2.5mm cable For a standard AC the cable rating is for Max Load Amps The Surge current at Start is only for 1 second . --- End quote --- no its not,the cable size is determined by the size of the protective device protecting it,the size of the protective device is determined by design current,or in regs speak Iz=>In=>Ib were Ib = Design current In = Nominal current rating of the protection device Iz = current rating of cable for a 5A motor circuit protected by a 6A BS88 device the cable only needs to handle 6A,well within the capacity of 1mm --- End quote --- Sorry Yes your correct ,I was thinking of something else . I Left the UK 32years ago . Xpat . They changed a lot of the Laws & Reg's because of the EU crap that your still trying to brake free of . Good luck and Keep well . |
| Labrat101:
--- Quote from: bdunham7 on December 06, 2020, 04:38:38 pm --- --- Quote from: Labrat101 on December 06, 2020, 04:08:27 pm ---51 years in Service building & HVAC I think I know how to read an AC serial Plate . Thank you. --- End quote --- I don't know what to say to that. You might want to take a second look. Mitsubishi Heavy Industries Avanti C3.5kW H3.7kW Reverse Cycle Inverter Split System SRK35ZSA-W-Set Also, when the FLA and LRA are the same, that's a dead giveaway that it is an inverter system. I don't know what rotary vane has to do with it--that's the compressor head, not the motor type. --- End quote --- Where on This plate does it say Inverter . This is Dave's photo . Lets ask Dave Does it say Inverter any where on his AC . ? Dave please take a photo of the outside unit . or tell us what you have your plate says Standard ? And even if it is an Inverter that would only mean that he can put a lighter fuse . but still needs an isolator switch. |
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