EHU is a simple utility application for campers and caravanners who want to take the guesswork out of connecting appliances to electrical hookup (EHU).
Set up your appliances before you travel, then all you need to do when you arrive at site is choose the level of hookup at your pitch.
EHU calculates the current draw of each appliance and displays a power bar that shows the total usage for different combinations. Worried about boiling the kettle while the fan heater is on? EHU can provide the information you need to avoid tripping the circuit.
Supports hookups of 6A, 10A and 16A at 230V, plus one user-configurable supply current between 1A and 15A.
Maximum cable current can be configured as 10A or 16A in Settings.
EHU is designed for iPhone and iPod touch but will run on iPad. Requires iOS 5.
Now available on the UK app store.
Custom Supply Current
The most common EHU supplies of 6A, 10A and 16A can be selected directly on the EHU page. From version 1.1.0, there is also a custom supply current that you can use to configure the application for other supply currents from 1A to 15A.
To change the custom current to another value, select it, then tap it again. Select the required supply current using the selector wheel.
To hide the selector wheel, tap the custom supply current again, or hit the Done button. Note that changes to the custom supply current value are only saved if you press Done rather than Cancel to leave the page.
Maximum Cable Current
Most EHU cables for tent use are protected internally by a 10A miniature circuit breaker (MCB). This limits your supply to 10A, even if you are on a 16A hookup.
If you select a supply current of 16A on the EHU page, you may notice an information banner at the bottom of the page advising you that your supply is limited by your EHU cable.
You can configure the maximum supply current of your cable in the Settings application on your device.
If your cable supports 16A or more, set it to 16A. If your cable has a 10A MCB, set it to 10A. If your cable is limited to something other than 10A or 16A, please let me know with a comment on this page and I will incorporate it into an update.