Even conduit cannot offer absolute protection against a direct hit you may want to run armored cable behind moldings where it comes near nails.
Armoured cable into junction box.
The coiled metal sheathing that wraps armored cable protects its wires from puncture by nails unless a nail hits it dead center.
Step 5 attach the armored cable connector.
Step 6 connect cable to junction box.
You should also place a support strap within about 12 inches of the junction box.
Long runs of armored cable can be quite heavy and cause stress on the connector between the cable and the junction box if not supported.
Thread the connector at the end of the car armored cable into the empty knockout tab on the junction box.
Use metal clad mc with a metal sheath specifically listed as impervious to water or underground feeder branch circuit cable uf either by itself or in a conduit system approved for use in wet locations if you desire additional.
Armored cable looks just as it sounds.
The problem i have is the junction outside the house where the 2 5mm meets the armoured cable i can t find any glands or outdoor rated junction boxes to suit an armoured cable and 2 5mm.
Inside the garage it goes into its own consumer unit and the rest is good.
The national electrical code prohibits use of bx technically named armored cable ac in wet locations.
Steel wire armoured cable construction uses installing the correct gland fitting into a metal enclosure fitting into a plastic enclosure earth connect.