I have some outdoor lights that are broken and need replacing. I have bought some new ones which I thought were suitable. However the problem I have is only 2 wires appear from wall recess (active and neutral). The light fitting I bought has a 3 point connector (a point for active, neutral and earth). Can this light fitting be wired into the 2 existing wires, or does it need an earth wire?
Electrical – how to wire a light with only 2 wires available
electricallightingoutdoorrepairwiring
Related Solutions
You can use a block connector (you can bridge it - on one side loop a a wire into each terminal to make it like one big connector)
or You can use a twist connector
I was searching for something like this. But an insulated version- i found something in china but the problem is it will never be approved to use that on internal circuits due to high risk of electrical shock. These are used inside distribution boards only - and can only be installed by qualified electricians.
Comments converted to answer.
If the manufacturer says they need a fuse, then I'd probably install a fuse. Just install a 5A fuse before the transformer, and make sure it's accessible in some way.
The light circuit is probably on a fuse/breaker at the service panel, but since you are using a transformer to step down to low voltage a fuse may be required to protect the transformer and low voltage wiring. The fuse/breaker in the main panel will probably be 15-20A; since it's designed to protect a normal line voltage lighting circuit, so you'll need another 5A fuse before the step down transformer to protect the transformer and everything downstream from it.
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Best Answer
You only need two wires. The earth, or ground, wire is a safety measure should something go wrong with the wiring inside, exposing a live wire. Older homes don't even have such a thing throughout the home and often include a three prong electrical outlet through "updating" without wiring up the ground connection.