Austin Electrical

01/06/2026

Today is the final day of the 100% Kings Birthday Blitz. Come in store today or check out the deals online www.100percent.co.nz/stores/austin-electrical

Get yours now!

24/05/2026

Spotlight on... Laundry,
Come in to our showroom and see for yourself some great options next time you want to upgrade your laundry appliances.

22/05/2026

https://www.facebook.com/100040741786150/posts/1954740325894008/
www.100percent.co.nz/stores/austin-electrical

Get yours now!

18/05/2026

Spotlight on... Winter Warmers. Come in store to see our great range of heating options, indoor and outdoor heaters, heat pumps, and electric blankets to keep you warm this winter. Have a chat to our great team today.

12/05/2026

Meet the Team...
We would like to introduce you to our awesome team.
Katherine, J***y, Lily, Fiona, Stevie, Matt, Harry and Clayton.
In the coming weeks we will be introducing them individually. Follow our page to keep updated.

10/05/2026

Spotlight on... Carpet Care. Come in and check out our range of vacuum cleaners and this really awesome cordless carpet cleaner. We also stock a great range of cleaning accessories. Pop on in today.

05/05/2026

Your Local Supplier of 'Last Minute Mothers Day Gifts'.
Pop in before 5pm on Friday.

02/11/2025

Generators.

What we know and what we don't...

63A doesn't go far in a dairyshed if you think you can run like normal. 63A is a size that will allow you to milk, run your washdown and if you are lucky maybe your refrigeration.

Your grid supply is fused at 80A three phase with most changeover switches rated to 125A so a lot of sheds are limited on a 63A supply when running on a generator.

To future proof yourself we recommend fitting a 125A inlet socket as well as a 125A changeover switch.

But can I get away with a 50Kva generator or 63A.

Well yes you can but keep the below into mind.

Never run a generator at 100% capacity, usually 85-90% is the maximum you should run your generator at for long periods apart from the odd thing starting, this allows for some spare capacity for when you start your compressor or submersible pumps start etc.

Every shed is different but take the below rough amperage for your calculations (we can do a specific site survey for you and discuss things on farm so you fully understand)

Vacuum pump 11 or 15kw are most common sizes.
21 - 28A FLA (Full Load Amps)

Refrigeration

20-40A FLA

Effluent pumps, various sized from 7.5kw to 15kw

15A - 28A

Hot Water Cylinders, varied 2 or 3 elements per hwc

12- 16A per phase

Single phase compressors, actually worst for generators due to their size and imbalanced load on a 3 phase generator

15A but can pull 60A for 1 second on start up, this is what makes your generator sound like it's working all of a sudden.

Three phase compressors, all round a better option for any dairyshed as you'll never need to replace another capacitor again, usually about 7.5kw sized

15A

Washdown pumps, varied but 7.5kw mainly

15A

Farm pumps, varies a lot but anywhere from 2.2- 4kw is most likely

4-9A

Then we still have cooler pumps, submersible pumps, plugs and lights in a dairyshed.

But 1 size does not fit all.

Recommended absolute minimum size for running your shed like you do when on grid power is 62.5-65kva with 70-75kva being a better option as you've got some reserve in the tank.

For those with lots of VSD's you would be happy with the smaller sized generator but those with DOL motors the bigger size is a must.

Feel free to make contact with Matt to discuss your specific site requirements.

30/10/2025

If you are considering buying a generator please discuss your power requirements with us before you purchase.
Lots of considerations around size of inlets, generator sizing or PTO vs skid mounted.

18/04/2025

Easter Bunnies deliver eggs at Easter
Austin Electrical deliver freezers 😁