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Is this Wiring Legal? (NSW)

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bdunham7:

--- 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

themadhippy:

--- 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.

Monkeh:

--- 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 ---

He may be referencing their equivalent of a C curve MCB, which would be reasonable for a traditional hard-starting compressor of moderate size.

Labrat101:

--- 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.

Labrat101:

--- 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 .

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