Configure a Power Design architecture

The architecture sets the electrical rules FOND follows when it designs your network: how much load each meter draws, which transformers and wires FOND can use, and how long secondary runs can be.

Unlike fiber architectures, a Power Design architecture is saved with the project. It isn’t shared across your workspace.

Set up the architecture

In the Architecture step, click Select architecture.
Work through the Transformers, Primary and Secondary tabs, clicking Next to move between them.
Click Save.

A tab marked with * has a setting that needs attention before you can save. Once the architecture is saved, the step shows a summary of the key settings.

Transformers

Setting	What it does	Default
Average meter load	The static load (in Amps at 120V) assumed for every address (diversified load estimation).	60 A (7.2kW) per meter
Transformer sizes	Which sizes to use (15, 25, 50 or 75 kVA), and maximum number of meters each is allowed to feed.	25 kVA (2 addresses) and 50 kVA (4 addresses)

FOND uses these settings to work out each transformer’s maximum secondary load.

Primary

Setting	What it does	Default
Primary voltage	The voltage of the primary network, in Volts, line-to-neutral.	14,400 V
Max source load	The maximum load each source can supply, in Amps at Primary Voltage	140 A
Primary wire options	Which primary wire types the design can use: single-, two- or three-phase	Single- and three-phase

Secondary

Setting	What it does	Default
Secondary wire options	4/0 for meter connections, and .350, with pull boxes where it breaks out to 4/0	Both on
Maximum secondary wire length	The longest secondary run allowed between a transformer and a meter	200 ft

Changing the architecture later

If you change the architecture after generating a design, make sure to Re-run design generation in the Design step to apply your changes.