Essential load VS Critical load | What you need to know

When looking at backup power solutions, many businesses are faced with information around essential, critical, and non-critical loads. It can get overwhelming and complicated very quickly.

Understanding these terms are essential when looking at backup power solutions. Knowing what you need to have a constant uptime on and what can come at a later date ensures you are getting the right generator for your business. 

What is essential load in a power supply?

Essential load is the power demand of a system that must be constantly supplied but is not critical to the business function. This includes, for example;

• lighting ventilation in a public building
• fire safety measures

If this load were to fail it would affect the safety of those inside the building or put them at risk. Essential load refers to the secondary services needed to support a business's processes.

What is critical load in a power supply?

Critical load goes beyond the basic vital functions of a business, referring to machines and tools that are indispensable in its daily operations. It is similar to essential load and so can be confused easily, however, the main difference with essential load is something secondary and so can wait.

Items classified as critical load cannot wait for power and so needs a constant power supply. This may include items such as:

• servers
• communication networks
• security systems
• life support equipment (for hospitals and hospices)

and so on. If this load fails it can significantly impact the profitability of a business in terms of lost profits or reputational damage.

What is non-critical load in a power supply?

Non-critical load is equipment that isn't essential but still needs to be powered. This can include items such as

• computers
• printers
• fans
• microwaves
• lighting
• air condition (in some businesses)

As well as other office equipment which is not essential but still important to day-to-day operations. Think of non-critical load as the office luxuries and things which make a job easier but not essential.

Why you need to know the different load types

Knowing the differences between these types of loads is critical when looking at backup power solutions and ensuring your business is able to remain operational during power outages. Understanding what needs to be powered and what is detrimental to business functions will help you allocate which items you need on which priority lists.

Having a deep understanding of critical load, essential load, and non-critical load can help businesses create the best backup power plan for all emergencies. A detailed backup power plan allows businesses to reduce the impact a power cut has on businesses; reduce any financial burdens such as loss of business or products, as well as continue production in some capacity.

Here at P&I, we work with businesses across the UK to supply critical power solutions that fit the needs and necessities of the business. Working to ensure that critical power solutions are not only fit for purpose now, but for the future. Our team of experts are on hand to help organise your critical power needs. Contact us today to see how we can change your backup power plans for the better.

Need power urgently? Our critical power team is available 24/7 for emergency power solutions.