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Frequently Asked Questions
Which failure mode does an insulated shell remove?
An entire failure mode.
There is no bonding to fracture.
And no bonding to inspect.
A broken strap looks like a good one.
This enclosure has no such state.
Are they strong enough for site work?
For most trades, comfortably.
Glass reinforcement carries real impact.
They tolerate being dropped.
Heavy civil work is harder on them.
That is where steel still wins.
How do they behave in cold weather?
They stiffen, and stiff means brittle.
A hard strike in frost can crack.
Steel would have dented instead.
Grade and additives change this a lot.
Winter sites should ask the question.
Does sunlight matter?
Over a long outdoor life, yes.
Surfaces chalk and weaken.
Stabilised grades resist it.
Unstabilised ones do not.
Stored equipment fares better than sited equipment.
Do they still need a protective conductor?
The circuits inside certainly do.
Every outlet needs its earth.
What vanishes is bonding the shell.
The enclosure is not part of the path.
That is the whole distinction.
How are they kept clean?
Easily, which suits some trades.
Smooth surfaces wash down.
No rust streaks.
Solvents can attack some polymers.
Check before using anything aggressive.
Which sites prefer them?
Wet ones, and lightly supervised ones.
Events and temporary venues.
Fit-out and interior trades.
Anywhere inspection is irregular.
And anywhere weight is carried upstairs.