Mains Energisers

Mains Electric Fence Energisers — Buying Guide

Why Choose a Mains-Powered Energiser?

Mains-powered (240V) electric fence energisers deliver the highest and most consistent output of any energiser type, making them the preferred choice for permanent, high-performance electric fencing applications. Unlike battery or solar units, mains energisers are not limited by battery capacity or solar panel size — they deliver maximum rated output continuously for as long as power is available. They are the industry choice for large properties, intensive livestock systems and any application where fence performance cannot be compromised.

Key Features of Mains Energisers

• High and consistent output — delivers maximum rated joule output reliably without battery depletion
• Long fence capability — suitable for fences of many kilometres when appropriate wire is used
• No battery costs — runs continuously from 240V power without ongoing battery replacement
• Full power in all conditions — output is not reduced by cloudy weather or battery discharge
• Wide output range — available from small 0.5-joule units for short garden fences to large commercial units exceeding 20 joules for extensive rural fence networks

Selecting the Right Output for Your Fence

Match the energiser’s joule output to your total fence length, wire type and animal species. Key factors: more wires = more energiser demand; vegetation touching the fence reduces voltage; hard-to-control animals (pigs, wild dogs) require higher shock energy. As a guide, allow 1 joule of stored energy per kilometre of fence in ideal (dry, clean) conditions, and 2–5 joules per kilometre in challenging (wet, vegetated) conditions.

Installation and Safety

Mains energisers must be installed according to AS/NZS 60335.2.76 and the manufacturer’s instructions. They must be protected from rain and direct sun. Always use a genuine earth stake system — a minimum of 1 metre of ground rod per joule of output is recommended. Keep the energiser out of reach of children. Never connect an electric fence energiser to household wiring — use only the mains energiser’s purpose-designed power connection.

Frequently Asked Questions

How many joules do I need for cattle?
For cattle, a minimum of 2–4 joules is recommended for short fences in clean conditions, increasing to 5–15 joules for longer or heavily vegetated fences. Consult the energiser’s fence length rating and match to your actual fence length.

Can I use a mains energiser outdoors?
Yes — mains energisers are designed for outdoor use when correctly housed in a weather-resistant enclosure or installed under cover. Protect from direct rain and flooding.

Order Mains Electric Fence Energisers Online — Australia-Wide Delivery

Order online for fast dispatch. We supply farmers, rural property owners and electric fence contractors across Australia. Contact our team for help selecting the right output for your fence.