6 Line Electric Fence Kit for 20m with Nemtek Wizord 4i Energizer

This 6 line electric fence kit covers about 20 metres of wall-top fence and is built around the Nemtek Wizord 4i, a single zone energizer rated at 3.7 joules into a 500 ohm load, with its 12V 7Ah backup battery and tag in the box. You get nine 6 line square tube brackets, and you choose the bend: straight, top bend or bottom bend. Wire, springs, earth spikes, lightning diverter, warning light, siren, signs, anchors, stays and 50m of HT cable are all in the box. Supply only: a registered electric fence installer must fit and certify the fence. For eight lines over 30m, see the 8 line kit.

What's in the kit

• 1 x Nemtek Wizord 4i energizer, with its 12V 7Ah battery, tag and 4 nail-in anchors in the box
• 9 x 6 line square tube brackets, black, in the bend you choose: straight, top bend or bottom bend
• 1 x 1.6mm aluminium fence wire, 500m roll
• 12 x silver compression springs
• 50 x S-hooks, 2mm
• 100 x aluminium ferrules, 6mm
• 4 x electric fence warning signs
• 4 x copper earth spikes, 1.2m
• 1 x double pole lightning diverter
• 1 x timed warning light
• 1 x 12V 15W siren
• 50 x nail-in anchors, 8 x 80mm
• 1 x HT cable, 50m
• 4 x 750mm stays with sleeve and screws

Choose your bracket bend

The nine brackets are the same black square tube in one of three patterns. Straight stands upright, in line with the wall. Top bend is upright with a short bend at the top. Bottom bend bends near the base so all six lines lean out over the wall; angled brackets go on the inside of the boundary wall and need the neighbour's consent if they lean into their property. Pick the bracket type when you order; it does not change anything else in the kit.

Not included

Gate contacts, if the fence crosses a gate: add a sliding gate contact. A crimping tool for the ferrules. Line clamps if you prefer bolted joins. The Nemtek Connect WiFi gateway for phone control. And the installation itself: Alectra supplies the equipment only.

How the quantities work out

Nine brackets over 20m gives eight gaps of 2.5m, inside the usual guide of no more than 3m between brackets. Six lines over 20m uses about 120m of the 500m roll, which leaves plenty for joins, ends and the run to the energizer. Twelve springs is two per line. Four signs covers 20m at the required spacing of no more than 10m, plus the gate. Four stays are for the brackets that take the strain: corners, ends and the gate post.

The energizer

The Wizord 4i runs on 240V mains and keeps the fence live for about 24 hours on its built-in 12V 7Ah battery when the power goes off. Nemtek rates it at 3.7 J (500 ohm load) with an 8000V open-circuit voltage. It has one gate input, siren and strobe outputs, an alarm relay, status lights and the tag to arm and disarm it, works with the Nemtek Connect app through the gateway sold separately, and carries a 2 year Nemtek warranty. It is rated IPx4, so mount it under cover.

Supply only, and the rules

In South Africa an electric fence must be installed and certified by a registered electric fence installer, who issues the certificate of compliance. A wall-top fence must stand at least 1.5m above the ground, and warning signs go at every gate and access point and no more than 10m apart. Alectra supplies the kit; your installer does the rest.