What’s the difference between a single-phase ( Residential ) or three-phase ( Industrial ) electricity supply?
Both of these are electricity supplies from your current supplier, it’s the amount of power that is different. A single-phase supply is smaller than a three-phase supply meaning you cannot use as much power. A typical house will need a single-phase supply whilst a larger house, flats or commercial building will need a three-phase supply.
The way to tell what supply a property has is by looking at the fuse on the service head.
Single-phase has one 100amp fuse this will give you 240v, Fuse to Neutral
A three phase supply, has three 100amp fuses ( This can be larger depending on your demand ) Where a 3 Fuse system will give you 240v for each fuse to neutral but 415v fuse to fuse..
Hi Mark, Very pleased with the panel you built up for us and the way that is was packed, excellent and you understand the issues of couriers and how the contactors etc could be flung off etc. Well done.
Thanks for the response, in fact it is now working perfectly, the generator required to be in OFF mode to shut down from the ATS control. Fantastic product, thank you. Patrick
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Automatic Transfer Switch. Motorised Transfer Switch.
Typical Look Of A 100Amp ATS Typical Look Of A 630 Amp Unit
There are many applications in which a UPS (Uninterruptable Power Supply) is vital, as even a very short break in the power supply could mean disaster – for example, in hospitals, labs or other situations where constant monitoring is required. Even with an automatic transfer switch, there is a very short period of time between mains failure and the generator starting up, which could have dire consequences. Using a UPS ensures that when the mains power fails there is no break in power supply. We supply UPS systems ranging from 5kVA to 3300kVA. You can purchase these with standard features or we can custom-make to your specific requirements.
We sell UPS Systems ranging from 5kVA to 3300 kVA with standard features or custom made to your own design and features to meet your specification.
Three-Phase UPS will have a three phase input supply (415 in the UK). However, they may have a three phase output or a single phase out put (depending on the customer's specification)- although its more usual to have both the incoming supply the same as the outgoing supply.
Three phase UPS systems will normally start around 10 kVA and go up to several MVA if they are connected in parallel.
With three phase UPS requirements there are a virility of options available, including:-