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The pros & cons of installing inverters ahead of ‘load reduction’

Eskom has announced it will be implementing ‘load reduction’ for certain regions of the country. Once again, this will leave many individuals and small businesses without power. In many instances, generators are not practical and South Africans are starting to consider investing in inverters.

Shaun Dubois of Just Property says that investing in an inverter may secure a better commercial tenant, but he warns that this would place an obligation on the landlord to maintain the system.

There are pros and cons, but it should be remembered that it may well add a complication that could have been avoided. Rather, landlords should be open to both residential and commercial tenants’ requests to install an inverter themselves.”

Does size matter?

The type of inverter system required is not measured by how big or
small your house or business is but rather, how many of your appliances or
electronic devices you would want to run at the same times says Rudi Rollin of
Electrosec.

The inverter’s voltage would determine how many batteries would be
required and, the inverter’s wattage would determine how many appliances or
electronics you could use at the same time during load shedding.

  • A small inverter system with one battery, off which you could run
    a laptop, television, or internet router (and one light for about three hours
    of load shedding) would cost in the region of R6 300.
  • A 24v 1200w inverter, costing approximately R10 000, would
    need two 12v batteries and off this model, you could run a television, a
    computer, a gaming console, a internet router and one of two lights.
  • A medium-sized inverters system which would come in at around R40 000,
    would require four 12v batteries and this would power most lights in the house,
    one or two entertainment systems and one or two smaller appliances.
  • A large 48v 10 000w inverter could cost approximately R60 000
    with the capacity to run more appliances.

A battery will cost approximately R2 800 and it should last
between four and six years. The size of the batteries dictate how long they will
last during load shedding. Depending on how many appliances you use, they
should give you three to four hours (deep cycle batteries give a longer run
time). Recharge time, if significantly depleted, last between four and six
hours.

Most appliances have stickers on them indicating their watt requirements: A kettle, for example, pulls somewhere around 2 000w, which would not work on a weaker system” advises Rollins. He says that prospective buyers need to evaluate the appliances they wish to run on their systems.

Remember” says Rollins, “that these systems are heavy so some strength will be required to move even the smaller ones, and it would be advisable to get the installer of the system to move a larger system for you. The larger systems should be as close to the DB board as possible to avoid too much cabling, and qualified electrician will have to do the installation”

Smaller systems can be plugged into a single wall
socket with an extension cable and multi-socket adaptor connecting the desired
appliances or electronics. You are only limited to the number of appliances you
can run at the same time.

While most inverters will switch off if you
overload them, there is always the chance that you could damage the inverter if
you overload it. It would be wise to know how many appliances (and what type)
your system can accommodate before switching anything on.

Inverters have fans which run to keep them cool when the inverter kicks in or, when it is busy recharging the batteries after the power has been restored; some of the larger systems have fans that stay on indefinitely.

Advice to tenants and landlords

Tenants considering purchasing an inverter
should remember to request permission from their landlord – this is most likely
an obligation of their lease:

While the smaller systems would be an item
that the tenant would simply unplug and remove,”
says Dubois, “with the
bigger systems, a written agreement should be compiled.

“Most leases contain a clause regarding any
improvements on a property and while they do differ, they generally either
state that all improvements must remain on termination of the lease, or that
the tenant may remove the improvements but must restore the property to the
original condition.”

In the long term Eskom power should become more reliable, and so the driving power behind adding value and powering your own home should be to ultimately save money on your energy bill and also to have less impact on the environment,” advises Dubois.

That said, the loss of productive time during load-shedding can seriously impact small businesses, and landlords of commercial properties will find that installing an inverter, especially in new builds, will attract tenants.”

Source: Propertywheel.co.za | https://propertywheel.co.za/2020/07/the-pros-cons-of-installing-inverters-ahead-of-load-reduction/

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