Frequently Asked Questions

No. kVA stands for Kilo Volt Amperes and is the true power produced by a generator. kW (or kilowatts) is the actual power that is used.

See our page on Bio-Diesel Generators for full details.

From when mains power fails to when the generator starts takes approximately 15 seconds for the generator to start and provide power. This time lag, although not a great length of time, can be fatal for computers and networks in an office environment.

JS Power Limited can conduct a site survey to ascertain your requirements. We conduct an electrical usage survey over a fix period of time using the latest diagnostic tools. The information gathered is then prepared and a report produced. This information provides you with information you require to correctly size your generator.

If you buy a JS Power generator, our experience of diesel and bio diesel generators can assure you of a reliable source of power 24 hours a day, 7 days a week, 365 days a year.

Our sets are built to the highest standards and all go through rigorous testing before being released to the market place. We design and manufacture generators to meet individual customer requirements.

JS Power Limited offers generator sets to provide prime power and standby power. We sell diesel and bio diesel generators from as small as 10kVA (Diesel) and 30kVA (Bio Diesel) that are ideal for domestic and small retail properties up to sets as large as 2,000kVA (Diesel) and 500kVA (Bio Diesel) that can provide power for complete communities.

Our generators can be started either manually or automatically and can be provided as open sets, canopied sets and containerised sets. There is also the option to have the generator mounted on a trailer if it needs to be transportable.

The type of generator that you need will vary depending on what it is required to power, where it will be installed and whether it is needed to run continuously or only when there is a power outage.

The following all need to be considered when you are thinking of installing a generator set:

• Location – you will need to think of where you want to place the generator set – ideally it should be located in a place with adequate access and lighting for service and maintenance purposes. Generators can be located inside or outside your premises.
• Mounting – generator sets should be mounted on a level base. Most level surfaces are suitable, if installing a set on soil or a roof you should consult a civil engineer.
• Ventilation and Cooling – it is important to make sure that there is enough ventilation to help keep the generator cool and to remove excess fumes and heat produced through engine combustion.
• Fuel System – you will need to consider how you will refuel your generator. Several refuelling options are available including the supply and installation of an external fuel tank.

Constant mains electricity is supplied into premises via electrical cabling. When this mains electricity is disrupted due to power failures, a signal is sent from the transfer switch to the generator set which then starts up the generator and when the electrical supply from it is stable, sends generated electricity back into the premises. When the mains supply is restored and stable the transfer switch reverts back to the mains and sends a signal to the generator to go back into standby mode.

The amount of time that a generator will run on a tank of fuel depends on the size of the tank and the load required from the generator. Each of our generators comes with a minimum of 9 hours (unless stated otherwise) run time at maximum load. With an external fuel tank, this run time can be extended even further.

The frequency and type of service required to maintain a JS Power generator set will depend on a number of things including the usage of the generator, the environment that it operates in and the percentage load that it carries.

A full service including a change of such things as filters and lubricating oil should be carried out every twelve months. Most failures to start-up are the result of the set not having been regularly serviced. We recommend that you check your generator once a week.

A transfer switch is a panel that is wired into the premises electrical distribution system to allow a generator to be used. It detects a loss in power for the mains and initiates the generator to start up and provide power. It then waits until the power from the mains returns to normal. It then puts your premises back onto mains power and signals the generator to cool down and return to standby mode.

JS Power can supply all parts for the generators we sell.