Caravan Power Usage Estimator · Produced by Stephen Phillips · elvsystems.com.au · Customer worksheet
ELV Customer Power Usage Estimator
A customer-friendly encrypted return worksheet for estimating daily usage, battery expectations, and charging contribution for a 12V, 24V, or 48V caravan or off-grid mobile power system.
Adjustable • Printable • Customer return formCustomer Details
Encrypted return file: when finished, export the .elv file and email it back. The job number/password is required to reopen it.
Load Assumptions
Adjust watts and run times as required. Select whether each load is AC, 12V DC, or system-voltage DC. The daily kWh updates automatically.
Peak Use: Normal Peak loads are added together. Optional Peak loads are treated as large appliances where normally only the biggest one is used at a time, unless you allow more below.
Default 1 = kettle OR toaster OR microwave etc. Use 2 or 3 only if customer expects multiple big appliances together.
Load
Type
Peak Use
Watts
Hours / day
Daily kWh
Del
Summary
Estimated daily usage loads
0.00 kWh/day
AC loads: 0.00 kWh/day · 12V loads: 0.00 kWh/day · System DC: 0.00 kWh/day
Approx daily Ah usage at selected system voltage of 24V
0 Ah/day @ 24V
Peak inverter load estimate
0.00 kW
-
Normal Peak: 0 W · Optional Peak: 0 W · Margin: 25%
Uses all Normal Peak AC loads plus the largest Optional Peak load by default.
House / Camping Battery capacity estimate
-
Based on estimated daily usage loads plus 20%. Adjust further for weather, desired autonomy, usable battery capacity, inverter losses, battery chemistry, and allowable depth of discharge.
Postcode / solar region adjustment
No postcode entered. Using default planning factor.
Enter an Australian postcode to apply a broad regional solar planning adjustment.
Charging input estimate
-
Net daily position
-
-
Estimated generator usage time
-
-
Roof solar note
-
These results are planning estimates only. Final system sizing, battery selection, inverter sizing, cable sizing, charging strategy, and protection must be confirmed by the installer or system designer.
Ready. Customer fills this out, exports the encrypted .elv, and emails it back.
ELV STATUS: LOCAL
Return workflow: email back the encrypted .elv file. PDF is optional.
Ref: Not exported yet
Customer Instructions
1. Adjust the run times and wattages to suit your normal usage.
2. Enter the booking / job number if supplied.
3. Export the encrypted .elv file.
4. Email the .elv file back for review. PDF is optional.
5. Select AC / 12V DC / System DC for each load where known.
6. For AC loads, select Peak Use: Normal Peak for loads that may run together, Optional Peak for large appliances normally used one at a time.
7. Add any special loads in the notes section if required.
8. If you are unsure about a load, leave it listed and set the hours to 0 rather than deleting it.
ELV Staff Only
Customers do not need this button. It is only for opening a returned encrypted .elv file for testing or review.
Returned By Customer
Stephen Phillips · elvsystems.com.au · REF:LOCAL · TOOL:caravan