The right house wire depends on where it runs as much as on what it carries. This decision table lists common installation conditions, what to check for each, and which APAR products have a published property that bears on it. It does not replace circuit design.
| Installation condition | What to check | APAR products with a relevant published property |
|---|---|---|
| Concealed in conduit | Use the in-conduit or trunking current column, and derate when circuits are bunched. | Shakti and Anushakti pages publish in-conduit and clipped columns; Green Wire publishes in-conduit or trunking and unenclosed columns. |
| Clipped on a surface or on a tray | Use the clipped or unenclosed column, not the in-conduit figure. | Same tables as above. |
| Warm zones: kitchens near hobs, top-floor voids, inside distribution boards | Confirm the stated operating temperature, derate for ambient temperature, and keep wire off hot surfaces whatever its rating. | Anushakti HR-FR-PVC and HR-FR-LSH are listed up to 105°C. Fire Protekt is listed at -30°C to +120°C. |
| Termite or rodent exposure: ground floors, stores, rural sites | Choose insulation with a stated pest property, and still protect the run with conduit. | Anushakti HR-FR-PVC and Fire Protekt: anti-termite. Anushakti HR-FR-LSH: rodent and termite protection. Green Wire: rodent-resistant. |
| Fire-sensitive occupancy: hospitals, schools, high-rise towers, data centres | Specify the grade by name and ask for the published smoke and halogen figures. | Fire Protekt lists these applications and is the halogen-free grade. Anushakti HR-FR-LSH lists hospitals and institutions. |
| Large single loads needing 10 or 16 sq mm | Settle the installation method, because only a clipped rating is published at these sizes. | Shakti FR-PVC, Shakti FR-LSH and Anushakti HR-FR-PVC are listed up to 16 sq mm. |
| Long runs | Check voltage drop using the resistance of the size, and go up a size if the drop is excessive. | See the conductor construction and resistance chart linked below. |
| Preference for a lead-free insulation compound | Name the requirement in the specification. | Green Wire is described as lead-free. |
Using the table
Work down the rows that apply to the project and note every product that satisfies all of them. If more than one remains, the remaining choice is grade and budget. Every temperature, pest and size statement above comes from the product page named, so check the page for the current wording before specifying.
Grouping and ambient derating are covered in the house-wire current rating chart. Voltage drop on long runs is covered by the conductor construction and resistance chart and the cable voltage drop table. Product details are on the Anushakti HR-FR-PVC, Anushakti HR-FR-LSH, Fire Protekt and Green Wire pages.